Frisk

Background

Frisk is the main protagonist of Undertale, who is controlled by The Anomaly. Throughout the game, Frisk will either make friends or kill everything in their path deciding on what you choose. In-game they're supposedly a mute, but they're capable of speaking on the phone with people.

This dropdown contains the synopsis of Frisk’s story. Read at your own risk as you may be spoiled otherwise!

Neutral Route Flowey attempts to kill Frisk after he pretends to offer honest advice. Toriel intervenes, hits Flowey with fire magic, and serves as a guide to the Ruins. At the end of a long room, Toriel asks Frisk to wait for her to return and states that she has errands to do. To be safe, Toriel gives Frisk a cell phone to call her with. Frisk travels through the remaining puzzles in the Ruins and eventually arrives at Toriel's home. They ask Toriel "how to exit the RUINS," which prompts Toriel to destroy the Ruins's exit. Toriel then battles Frisk because she wants them to prove that they can survive outside of the Ruins. Then, Frisk meets Sans and Papyrus in Snowdin Forest. The brothers set up traps and puzzles in an attempt to capture Frisk. After passing through Snowdin, Papyrus battles Frisk. Undyne, the head of the Royal Guard, pursues Frisk throughout Waterfall. Monster Kid often saves Frisk from Undyne by accident because they are so excited to see Undyne in action. After a chase scene, Undyne destroys a bridge that Frisk is standing on, and Frisk falls into the Garbage Dump. Before they get up, they recall a memory from the first human. In the garbage dump, Mad Dummy battles Frisk after accusing them of mistreating their cousin, Dummy, in the Ruins. At the end of Waterfall, Undyne battles Frisk after she gives an abridged monologue atop a crag. After entering Hotland, Frisk enters a lab and meets Alphys and Mettaton. Alphys tells Frisk that she is not a bad guy, and Mettaton interrupts them with a quiz show. Alphys gives Frisk an upgraded cell phone after the quiz show concludes. She guides Frisk through Hotland and the CORE, helping them solve puzzles and evade Mettaton. Before his battle at the end of the CORE, Mettaton reveals that Alphys had created all of the traps in Hotland in an attempt to endear herself to Frisk. He then transforms into Mettaton EX and battles Frisk. While passing through New Home, the capital of the Underground, Frisk learns the story of Asgore and Toriel's children from passing monsters. Then, Sans judges Frisk in the Last Corridor and explains the meaning of LOVE and EXP. He also emphasizes Frisk's importance in the fate of the world. Frisk enters the Throne Room and finds Asgore, who tries to make small talk, only to realize their fated confrontation. The two walk to the Barrier and Asgore gives Frisk one last opportunity to leave before fighting. Just before the fight, Asgore shows the six collected human SOULs, preparing the containment process after the battle. Right before the fight starts, Asgore destroys the MERCY button with his trident, making it impossible to spare or flee. However, at the fight's conclusion, Frisk can explicitly choose whether to spare or kill Asgore. Regardless of the choice made, Flowey appears, destroys Asgore's SOUL and takes the human SOULs. The game then abruptly closes. After reopening the game, Frisk finds that Flowey has saved his own game over the SAVE file, having gained the power to do so with the stolen human SOULs. Loading Flowey's game, Frisk confronts a powered up Flowey and defiantly steps forward, entering an initially hopeless battle with him. After Frisk calls for help several times, the stolen SOULs begin to revolt: first, they heal Frisk, and then they weaken Flowey, leaving him vulnerable to destruction. After reducing his HP to 0 and listening to his monologue, the SOULs remove Flowey's ability to SAVE or LOAD. After this, the SOULs leave Frisk and Flowey alone. At this point, there is an option to kill or spare a weakened Flowey before leaving the Underground, return to the surface, and end their journey. After leaving the Underground, Frisk receives a call from Sans, who leaves a message about what happened to the Underground after Asgore died. This varies based on what monsters were killed and what friendships were completed. True Pacifist Route To complete the True Pacifist Route, Frisk must have first completed the Neutral Route. If Frisk has completed the Neutral Route without gaining any EXP or LV (i.e. without killing anyone), it is possible to backtrack in the existing SAVE file to complete any missing friendships, then achieve the True Pacifist ending. If Frisk acquires any EXP or LV, they have to reset the game to reach the True Pacifist Ending. While Frisk befriends many of the monsters in the Underground, only the Undyne, Papyrus, and Alphys friendships are required to achieve the True Pacifist Ending. Frisk gains Papyrus's friendship by visiting him at his home and hanging out or dating him. If Frisk chooses to give Undyne some water after being pursued, Undyne can be befriended (if they have not gained any EXP beforehand). Otherwise, a reset is needed to achieve Undyne's trust and friendship. Frisk visits Undyne with Papyrus's help, and Undyne gets "revenge" by trying to befriend Frisk and become "besties", setting her house on fire in the process. She tries to fight Frisk to regain honor but realizes that Frisk is a "wimpy loser with a big heart" just like Asgore and decides to be friends. Undyne, having been encouraged to send a love letter to Alphys, gives the letter to Frisk, who delivers it to Alphys. This results in a date sequence with Alphys in which she and Undyne realize their feelings for each other and Alphys begins to come to terms with her past mistakes. After befriending Alphys, Papyrus recommends traveling to Alphys's lab. In the lab, there is a letter on the floor that, when picked up, reads a monologue and the instructions needed to proceed to learn "the truth." Walking through the bathroom door reveals an elevator which goes down to the True Lab after a malfunction. Frisk proceeds to explore the True Lab and along the way learns of Alphys's failed experiments (amalgamates) with determination and also about the origin of Flowey. After exploring the True Lab and talking to Alphys, she gains the confidence to reveal the truth about her experiments to the rest of the Underground. While attempting to leave, Frisk receives a phone call in the elevator from an unknown voice. The elevator immediately and forcibly brings Frisk to New Home. After returning to the throne room and confronting Asgore again, the pre-fight dialogue is interrupted by Toriel, who stops Asgore from fighting Frisk. Toriel is immediately followed by the other main characters who encourage everyone to get along. However, in a surprise twist, Papyrus reveals that it was "a tiny flower" who told him to bring everyone there. Immediately after this reveal, Flowey appears, having again stolen the SOULs of the six other humans. He attempts to kill Frisk, but Undyne, Toriel, Alphys, Asgore, Sans, and Papyrus use their power to block Flowey's finishing blows. Directly after this, all of the Underground's monsters arrive to encourage Frisk in the fight against Flowey. However, Flowey reveals that this is what he wanted all along so that he could absorb the souls of all the monsters in the Underground along with the six human SOULs. Due to the immense power gained from the six human SOULs and all of the monster SOULs, Flowey can transform into his true form, and just before the fight begins it is revealed that he is actually Asriel Dreemurr. During this fight, Frisk is invincible, and any hit that would normally result in death instead causes the heart to split, but reform back together. The first time this happens, it is accompanied by the text "but it refused." After stalling for long enough, Asriel transforms again. At this point, Frisk can feel the souls of Toriel, Asgore, Alphys, Undyne, Papyrus, and Sans within Asriel and the ACT button changes to SAVE to represent the act of freeing everyone's souls. This is accomplished by completing a short sequence of ACT options to restore the memory of each lost soul after selecting the said lost soul of a chosen character. After saving each monster, Frisk realizes that there is still one more person to save. After choosing to save "someone else," Asriel's memories of the first human (who strongly resembled Frisk) begin to play in a slideshow style. It is then revealed this "someone else" is Asriel himself. After this, Asriel starts to feel the love the monsters feel for Frisk through the souls he has absorbed, and slowly loses the will to fight as he is overcome with his fear of dying alone. After reverting to his child form, Asriel learns Frisk's name. He apologizes for hurting everybody, and Frisk can choose to forgive or not forgive Asriel. Regardless of the choice made, Asriel destroys the barrier using the power of all of the SOULs before releasing them. Knowing that he will turn back to a flower without the power of the SOULs to sustain him, Asriel says one last goodbye to Frisk before leaving. At this point, there is a choice to hug Asriel or do nothing. After the scene with Asriel finishes, Frisk wakes up in front of Toriel, Sans, Papyrus, Undyne, Alphys and Asgore. While the monsters remember little about Flowey and nothing about his incarnation as Asriel, they do know Frisk's name. At this point, Frisk can backtrack through the Underground and talk to the other monsters, before returning to the surface. If Frisk backtracks through the Ruins, they can find Asriel tending to the Golden Flowers. Asriel asks about Frisk's desire to travel up Mt. Ebott in the first place. Receiving no answer, Asriel lists off foolishness or fate as possible motives, but comes to the conclusion that "only you (Frisk) know the answer." After passing through the final door to the surface, Frisk leaves the Underground with their friends. Asgore offers Frisk the chance to be the monsters' ambassador to the humans. Most of the main monster cast then leave, except for Toriel, who asks about Frisk's plans. At this point, Frisk can choose to stay with Toriel or to go elsewhere. After choosing to stay with Toriel, the ending scene shows Frisk sleeping in a bed, and Toriel bringing a slice of pie to Frisk's bedroom. Otherwise, if Frisk has "places to go," Toriel ends their conversation with "Frisk. "See you around."" As Toriel leaves, Frisk turns north and does not watch her. The game ends with a group photo of the main monster cast with Frisk in the middle. Genocide Route While traversing the Genocide Route, many characters comment on the protagonist's creepy smile. Sans comments that it would be great if the protagonist continued pretending to be a human, and Asgore inquires what kind of monster the protagonist is. At the end of the Ruins and when going through New Home, Flowey determines that the protagonist is empty inside, just like himself. He concludes that the protagonist is Chara, and informs them of a plan he has to become omnipotent.

Statistics

Key: Physical Form | SOUL Form | Full Determination

Tier: At least 9-C, possibly Higher | At least 9-C, possibly Higher | At least 9-C, possibly Higher

Name: Frisk

Origin: Undertale

Sex: Unknown (Their Sex is left up to interpretation)

Age: Unknown, likely Pre-Teens (Referred to as a kid by Toriel and Sans)

Classification: Human

Status: Alive, Other after genocide route (After completing the genocide route, every ending shows that Frisk has been fully possessed by Chara)

Alignment: True Neutral (Frisk will choose any path that they want to see how the outcomes may go, regardless of their choices they will never truly feel any impact from them)

Dimensionality: 3-D

Attack Potency: At least Peak Human level, possibly Higher (As stated by the "librarby" books, humans in their physical forms are far stronger than monsters. This should scale Frisk to monsters. Can harm enemies that can harm them) | At least Peak Human level, possibly Higher (Defeated Asgore in combat, however, as stated by the librarby, monsters are weaker when they don't want to fight. Along with this, a human's SOUL form is made specifically for a way for monsters to fight humans outside of their physical forms) | At least Peak Human level, possibly Higher

Durability: At least Peak Human level, possibly Higher (Should be comparable to the likes of Chara, who survived a fall from the mountain top. As humans in their physical forms are far stronger then monsters, Frisk's durability by proxy should scale) | At least Peak Human level, possibly Higher | Multiverse level (Tanked hits from Asriel)

Striking Strength: At least Peak Human Class, possibly Higher | At least Peak Human Class, possibly Higher | At least Peak Human Class, possibly Higher

Lifting Strength: Average Human (Can casually lift the Annoying Dog along with other items on their person) | Average Human | Average Human

Travel Speed: Superhuman (Could somewhat outrun Undyne for a bit) | Superhuman | Superhuman

Combat Speed: FTL | FTL | Extra-Temporal

Reaction Speed: FTL (Shouldn't be any slower then their SOUL form) | FTL (Could dodge Gaster blasters which are made of lasers. Comparable to Napstablook who viewed light as extremely slow, and can dodge sunlight from Knight Knight) | Extra-Temporal (Outran Asriel Dreemurr's hyper goner which was consuming the entire timeline)

Stamina: Average, Superhuman with Full Determination (Can repeatedly create dreams from nothing and withstand even the most powerful attacks)

Range: Standard Melee Range, Extended Melee Range with other weapons, likely Hundreds of Meters with Empty Gun, Complex Universal to Low Multiversal with Reset (Causes Frisk to go to a new timeline with each reset), Multiversal with True Reset (Resets the entire Undertale multiverse)

Intelligence: Above Average (Can solve many puzzles to progress within the Underground)

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Powers and Abilities

Superhuman Physical Characteristics, Weapon Mastery (Can use a huge assortment of weapons), Immortality (Type 6. When a human dies, its soul remains stable outside the body), Absorption (Monsters and humans can absorb the SOUL as long as the person isn’t the same species as them), Soul Manipulation & Essence Manipulation (All monsters and humans can perform attacks that can damage the SOUL), Limited Intangibility (It is stated that taking damage causes Frisk to become invulnerable where attacks pass through them), Limited Spatial Manipulation (Frisk was able to visibly move the fight box up), Limited Dimensional Travel (Can forcibly enter a monster's Personal Domain and can leave personal domains), Unlimited Ammo (Can fire bullets out of the empty gun, which has no ammo), Flight (via their jet pack), Information Analysis (By using the act Check, Chara will give them the enemy's stats), Statistics Amplification (By using the act Flex they boost their strength, while using the act Clear Mind will boost their defense), Statistics Reduction (By using the act Stare Frisk can weaken magical orbs), Creation (By using the act Draw frisk can create stuff by drawing]), Heat Manipulation (By using the act Heat Up), Damage Reduction (By using the act Hope frisk can lower incoming damage), Subjective Reality (By using the act Dream Frisk can create Last Dreams), Sleep Manipulation (By using the act Sing), Transformation and Energy Projection (By using the yellow button on their phone their soul turns yellow which allows them to shot energy based projectiles)

Limited Resistance to Power Nullification (When Asriel was knocking away all of Frisk other item commands the SAVE prompt still remained), Resistance to Soul Manipulation & Essence Manipulation (Type 3. Can survive attacks to their SOUL), Extreme Heats (Unaffected by heat from the MTT-Brand Oven that burned down Undyne's house)

Healing (Via various kinds of healing items, the healing is also metaphysical via healing the SOUL. Stained apron heals every turn. At FD Frisk can use his determination to create “last dream” which heals him greatly), Statistics Amplification (Items like sea tea increase Frisk’s speed, Torn Notebook, Cloudy Glasses, & Temmie Armor increases invincibility, Cowboy Hat & Punch Card increases strength, armors and weapons naturally increase both strength and defense), Limited Power Nullification (Via Hush Puppy)

Sheer Will (All holders with determination logically have large amounts of willpower), Time Travel & Timeline Hopping & Save and Load (Travels back to a specific point in time while hopping through timelines, users with a greater amount of determination can use this to save and load through all existing timelines), Limited Reality Separation (Type 4. Exist outside of reality as shown in the scene where Photoshop Flowey creates a SAVE File that Frisk is outside of within his SAVE File is Frisk’s original SAVE File which Photoshop Flowey comes out of), Subjective Reality & Creation (Frisk can create “last dream” to heal themself), Information Manipulation (Type 3. Photoshop Flowey re-wrote the history of the war between monsters and humans), Existence Erasure (Type 4. Erased all inhabitants of the current timeline and a save file), Reality Warping (Determination is described as the power to re-shape the world, and Photoshop Flowey re-shaped the world in his own image), Possible Fate Manipulation (Determination gives the user the ability to change fate itself), Statistics Amplification (Frisk used determination to continuously amp themselves to tank hits from Asriel's attacks and keep up with him in speed), Regeneration Negation (Up to Low-Godly to Mid-Godly Genocide run Frisk was capable of permanently killing Undyne the Undying), Acausality (One with very strong determination can remember resets), Power Nullification (Passive; Anyone with higher determination then another can overrride their powers. The difference in DT allows them to nullify more abilities, though the standard is negating all time based abilities)

Resistance to Memory Manipulation, Reality Warping, & Time Manipulation (Unaffected by standard resets)

Reality Warping (Warps all of reality back to an original state), Memory Manipulation & Resistance Negation (Erases the memories of every character, even those who originally resisted it), Time Manipulation (Resets the world), Information Manipulation, Data Manipulation, & Conceptual Manipulation (A true reset thoroughly erases all information in one’s file, resetting it back to 0. Chara with the true reset set a permanent flag that cannot be removed without non-canon hacking), Possible Acausality Negation (Type 5. Annoying Dog was seemingly affected by the true reset itself too as he repeated the process of re-absorbing the legendary artifact)

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Standard Equipment

Item	Description	Effects	Location and Cost
Bandage	It has already been used several times.	10 HP	Starting item, Free. Becomes consumable once a different piece of Armor is equipped. One of a kind.
Monster Candy	Has a distinct, non-licorice flavor.	10 HP	The Ruins, Free. Four of a kind. Three in Hard Mode.
Spider Donut	A donut made with Spider Cider in the batter.	12 HP	Spider Bake Sale in the Ruins, 7G. Spider Bake Sale in Hotland, 9999G.
Spider Cider	Made with whole spiders, not just the juice.	24 HP	Spider Bake Sale in the Ruins, 18G. Spider Bake Sale in Hotland, 9999G.
Butterscotch Pie	Butterscotch-cinnamon pie, one slice.	ALL HP	Toriel's Home, Free. One of a kind. Not in Hard Mode.
Snail Pie	Heals Some HP. An acquired taste.	Restores HP up to one less than maximum HP	Toriel's Home, Free. One of a kind. Hard Mode only.
Snowman Piece	Please take this to the ends of the earth.	45 HP	Snowman in Snowdin Forest, Free. Two of a kind; the second one replaces the first if lost. Three in the Genocide Route.
Nice Cream	Instead of a joke, the wrapper says something nice.	15 HP	Cart in Snowdin Forest, 15G. Cart in Waterfall, 25G (15G while carrying an umbrella). Free (in exchange for three Punch Cards). Cart in Hotland, 12G (if Royal Guards were killed). Unavailable in the Genocide Route or after exhausting the Snowdin kill counter in the Neutral Route.
Bisicle	It's a two-pronged popsicle, so you can eat it twice.	11 HP	Snowdin Shopkeeper 15G (initial) 30G (after Papyrus) 45G (after Undyne) 70G (after completing CORE) Free (Genocide Route)
Unisicle	It's a SINGLE-pronged popsicle. Wait, that's just normal...	11 HP	Bisicle Consumption, Free.
Cinnamon Bunny	A cinnamon roll in the shape of a bunny.	22 HP	Snowdin Shopkeeper, 25G. Free in the Genocide Route.
Astronaut Food	For feeding a pet astronaut.	21 HP	Cooler in the Garbage Dump, Free. Two of a kind.
Crab Apple	An aquatic fruit that resembles a crustacean.	18 HP	Gerson, 25G.
Sea Tea	Made from glowing marsh water. Increases SPEED for one battle.	10 HP	Gerson, 18G.
Abandoned Quiche	A psychologically damaged spinach egg pie.	34 HP	Bridge Seeds Puzzle in Waterfall, Free. One of a kind.
Temmie Flakes	It's just torn up pieces of colored construction paper.	2 HP	Tem Shop 1G (ON SALE,) 3G (Normal) 20G (expensiv) 1000G (premiem, Genocide Route exclusive)
Dog Salad	Recovers HP (Hit Poodles)	2/10/30/ALL HP (random chance)	Chance of spawning when Dog Residue is used, Free.
Instant Noodles	Comes with everything you need for a quick meal!	4 HP (in battle) 15 HP (Overworld) 90 HP (Serious Mode)	Refrigerator in the Lab, Free. One of a kind.
Hot Dog...?	The "meat" is made of something called a "water sausage."	20 HP	Hot Dog Stand in Hotland, 30G. Unavailable if Papyrus is killed.
Hot Cat	Like a hot dog, but with little cat ears on the end.	21 HP	Hot Dog Stand in Hotland, 30G. One of a kind. Unavailable if Papyrus is killed.
Junk Food	Food that was probably once thrown away.	17 HP	Bratty and Catty, 25G. Decreases ratings when in the fight with Mettaton. Free in the Genocide Route.
Hush Puppy	This wonderful spell will stop a dog from casting magic.	65 HP	MTT Resort, sliding a Hot Dog under the fourth door. One of a kind. Unavailable if Papyrus is killed.
Starfait	A sweet treat made of sparkling stars.	14 HP	MTT-Brand Burger Emporium, 60G Boosts ratings when in the fight with Mettaton.
Glamburger	A hamburger made of edible glitter and sequins.	27 HP	MTT-Brand Burger Emporium, 120G Trash can in the CORE, Free (one of a kind). Boosts ratings when in the fight with Mettaton.
Legendary Hero	Sandwich shaped like a sword. Increases ATTACK when eaten.	40 HP	MTT-Brand Burger Emporium, 300G Boosts ratings when in the fight with Mettaton.
Steak in the Shape of Mettaton's Face	Huge steak in the shape of Mettaton's face. You don't feel like it's made of real meat...	60 HP	MTT-Brand Burger Emporium, 500G Boosts ratings when in the fight with Mettaton. One of a kind.
Popato Chisps	Regular old popato chisps.	13 HP	Vending Machine in the True Lab, 25G.
Bad Memory	?????	-1 HP ALL HP (if HP is 3 or lower)	Fight against the Memoryheads, Free.
Last Dream	The goal of "Determination."	12 HP (Description) 17 HP (Use)	Fight against Asriel Dreemurr, Free. Fills empty inventory slots.

Weapons

Item	Description	Effects	Pattern	Location and Cost
Stick	Its bark is worse than its bite.	0ATK	Single hit	Starting Item, Free. One of a kind. Cannot be re-equipped.
Toy Knife	Made of plastic. A rarity nowadays.	3ATK	Single hit	Balcony of the Ruins, Free. One of a kind.
Tough Glove	A worn pink leather glove. For five-fingered folk.	5ATK	Single hit, then mash	Dimensional Box, Free. Snowdin Shopkeeper, 50G. Free in the Genocide Route.
Ballet Shoes	These used shoes make you feel incredibly dangerous.	7ATK	3 hits	Tall Grass in Waterfall, Free. One of a kind.
Torn Notebook	Contains illegible scrawls. Increases INV by 6.	2ATK	2 hits	Gerson, 55G.
Burnt Pan	Damage is rather consistent. Consumable items heal four more HP.	10ATK	4 hits	Isolated area in Hotland, Free. One of a kind.
Empty Gun	An antique revolver. It has no ammo. Must be used precisely, or damage will be low.	12ATK	4 hits, very fast	Bratty and Catty, 350G. Free in the Genocide Route. One of a kind.
Worn Dagger	Perfect for cutting plants and vines.	15ATK	Single hit	Asgore's Home, Free. One of a kind. Replaces the Real Knife in the True Pacifist Route and Neutral Route.
Real Knife	Here we are!	99ATK	Single hit	Asgore's Home, Free. One of a kind. Replaces the Worn Dagger in the Genocide Route.

Armors

Item	Description	Effects	Location and Cost
Bandage	It has already been used several times.	0DEF	Starting Item, Free. One of a kind. Cannot be re-equipped. Becomes consumable once unequipped.
Faded Ribbon	If you're cuter, monsters won't hit you as hard.	3DEF	One Switch Puzzle in the Ruins, Free. One of a kind.
Manly Bandanna	It has seen some wear. It has abs drawn on it.	7DEF	Snowdin Shopkeeper, 50G. Free in the Genocide Route.
Old Tutu	Finally, a protective piece of armor.	10DEF	Behind a waterfall in Waterfall, Free. One of a kind.
Cloudy Glasses	Glasses marred with wear. Increases INV by 9.	5DEF	Gerson, 35G.
Temmie Armor	The things you can do with a college education! Raises ATTACK when worn. Recovers HP every other turn. INV up slightly.	20DEF	Tem Shop (after buying scholarship), 9999-750G. Price is lowered after every death. Cannot be bought in the Genocide Route.
Stained Apron	Heals 1 HP every other turn.	11DEF	Isolated area in Hotland, Free. One of a kind. Cannot be obtained in the Genocide Route.
Cowboy Hat	This battle-worn hat makes you want to grow a beard. It also raises ATTACK by 5.	12DEF	Bratty and Catty, 350G. Free in the Genocide Route. One of a kind.
Heart Locket	It says "Best Friends Forever."	15DEF	Asgore's Home, Free. One of a kind. Replaces The Locket in the True Pacifist Route and Neutral Route.
The Locket	You can feel it beating.	99DEF	Asgore's Home, Free. One of a kind. Replaces the Heart Locket in the Genocide Route.

Item	Description	Effects	Location and Cost
Punch Card	Use to make punching attacks stronger in one battle. Use outside of battle to look at the card.	Increase ATK when in battle. Three can be traded in for a free Nice Cream.	Box next to Cart in Waterfall, 25G (15G if the protagonist was carrying an umbrella when Nice Cream was bought). Unavailable on the Genocide Route or after exhausting the Snowdin Forest kill counter on the Neutral Route.
The Annoying Dog	A little white dog. It's fast asleep...	Absorbs the legendary artifact when used or dropped. Also gives the protagonist Dog Residue.	Legendary Artifact Room in Waterfall, Free. One of a kind.
Dog Residue	The Dog Residue has different random descriptions, such as being a jigsaw puzzle left unfinished by the Annoying Dog as well as other oddities.	Fills the inventory with more Dog Residue, with a possibility of giving Dog Salad.	Legendary Artifact Room in Waterfall, Free.
Mystery Key	It is too bent to fit on your keychain.	Unlocks the front door of the house next to Napstablook's.	Bratty and Catty, 600G. Free on the Genocide Route. One of a kind
Silver Key	(not an inventory item)	Unlocks Sans's workshop.	Sans's room, Free. Only available on a no EXP earned Neutral Route after obtaining the key to Sans's room in the Last Corridor.
Undyne's Letter	Letter written for Dr. Alphys.	Used to regain access to Dr. Alphys's lab.	Undyne in Snowdin (or Waterfall if befriended after defeating Asgore) in the True Pacifist Route, Free. One of a kind.
Undyne's Letter EX	It has DON'T DROP IT written on it.	Used to regain access to Dr. Alphys's lab.	Undyne in Snowdin if the protagonist drops Undyne's Letter, Free. One of a kind.
0	If you are reading this, I messed up somehow.	Dropping this item or viewing it in battle crashes the game	Unobtainable without glitches.

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Notable Techniques

FIGHT: Frisk is prompted to pick an enemy to attack. Frisk can attack one enemy each turn.

ACT: Frisk is prompted to select an enemy, and is then given one or more ACT options which are specific to that enemy.

ITEM: Using consumable items regains health. Some consumable items are capable of increasing stats. Using equipment items other than the Bandage or Stick equips them.

MERCY: Sparing means that Frisk does not want to fight. Frisk is encouraged on multiple occasions on their journey to show mercy to the opponents they fight.

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Other

Standard Tactics: Frisk tactics depends on the route Frisk is on. If neutral, Frisk's tactic normally will be to attack if necessary and use the ACT command to find out things about their enemy and find potential alternatives to the fight. If the pacifist route Frisk will never use the FIGHT command, unless absolutely necessary, going for ACT and MERCY tactics. Genocide route Frisk will go striaght for the FIGHT command, always attempting to slaughter all the opponents in their way. Even with these routes in mind, Frisk is still technically a wild card as they could switch at any moment, such as they could be on their pacifist route and suddenly opt to murder enemies and vice versa with the genocide route.

Weaknesses: Can be forced into soul combat, otherwise nothing notable.

Explanations

Why attacking the SOUL is essence manipulation.

Battle Records

*Ham Princess (TOPHAMHAT-KYO) - Thread

• • Keys: First key Frisk was used.
  • Conditions: Speed was equalized.
  • Location: SBA
  • Restrictions: None.

None.

*Ness (MOTHER 2) - Thread

Keys: Mid Game Ness (Low 8-C), SOUL Form Frisk

Conditions: Speed Equalized

Location: SBA

Restrictions: None

Discussions (Link For Mobile Users):

Discussion threads involving Frisk