Mettaton

Mettaton is a robot with a SOUL and was built by Alphys. Initially poised as an entertainment robot turned human killing robot, Mettaton is later revealed to have only acted as such so that Alphys could rescue the human, feel important and become closer to them. Mettaton is the sole television star of the Underground.

Mettaton
Box FormMettaton EXMettaton NEO “ Oh my! This is a family friendly TV show! Now stand still while I murder you. „
Origin
Origin	Undertale/Deltarune
Creator	Toby Fox
First Appearance	Undertale
Characteristics
Species	Monster
Gender	Male
Pronouns	He/Him
Sexuality	Unknown
Age	Unknown
Birthday	Unknown
Height	Unknown
Weight	Unknown
Ethnicity	Unknown
Status	Other
Alignment	Chaotic Neutral
Archetype	Killer Robot
Occupation	Idol, TV Star
Time Period	201X
Language	English, Monster
Combat Style	Magical Combat
Homeworld	Earth
Relationships
Affiliations	Underground
Enemies	Humans (Formerly in True Pacifist Route)

Appearance

General Description: Mettaton has three distinct forms: his initial box form, his humanoid EX form, and his combat-oriented NEO form.

Initial Form: A gray, largely rectangular box with a 4x5 grid of rectangular lights at the top, similar to the mechanism in Snowdin Forest used for Papyrus's Tile Puzzle. The grid of lights can change colors between red, yellow, green, and blue, and Mettaton uses these color changes in place of facial expressions. Four dials are along the bottom of his body. A single leg ending in a wheel is at the bottom. Two segmented robotic arms end in white gloves.

Mettaton EX: After having the switch on his back flipped in the Neutral or True Pacifist Route, Mettaton transforms into Mettaton EX, a body he specially requested Alphys make for him. In this humanoid form, he has black hair with a long fringe that seems to cover his right eye, pale "skin" and visible metal segments below and above his left eye. A pink chest piece, a narrow metallic waist with a box contraption, and black shoulder pads above segmented arms that end in gloves. The chest piece has what appear to be a speaker and some knob or gauge. The waist has two parts that seem to act as a locking mechanism that holds his "heart-shaped core," as they both lose white pixels during his "heart-to-heart" attack. Long black-clad legs end in pink high-heeled boots.

Mettaton NEO: After being confronted by the human on the Genocide Route, Mettaton transforms into Mettaton NEO, which resembles Mettaton EX but has a more combat-oriented design. Mettaton NEO can be killed by a single attack and has no attacks of his own. His right forearm is replaced by what appears to be a cannon. Pauldrons clad his shoulders, which are shaped like legs and are longer than his arms. Wings are on his back. The soul on his waist points upwards in a more monster-like manner. A heart shape is engraved on his chest plate, similar to Undyne the Undying, also mimicking the Delta Rune in the same ways. His hair on the right side is spiked out, revealing an entirely black segment of his face, with a sparkle or crosshair in place of his right eye.

Alternate Forms/Disguises: Mettaton EX and Mettaton NEO are considered alternate forms of Mettaton.

Personality

• TV Host: Mettaton is a confident, charismatic, and charming TV host who loves drama, action, and violence. He lives for his ratings and adores performing. He strikes a pose when he does something wrong and makes time on his shows to beat up "heel-turning villains."

• Egotistical: Mettaton has a strong craving for attention and seems very egotistical, shown when he boasts about the beauty of his true form.

• Cares About His Show's Impact: Despite his self-centered personality, Mettaton deeply cares about the positive impact his show has had on the inhabitants of the Underground.

• Soft Spot: Mettaton has shown soft spots for several characters, such as Alphys and Napstablook.

• Feelings on Humanity: Mettaton has no hate or prejudice against humans despite knowing about monsters' history with them. His initial attempts to kill the human were him playing along with Alphys's plan. He tells the human he has no desire to hurt humans and is more interested in entertaining. He attempted to kill the human to prevent Asgore from taking their SOUL and be seen as a hero to humankind.

• Demanding: Mettaton is a very demanding boss who is unpleasant to work for, especially according to Burgerpants. This is contradicted by dialogue from other employees when he is killed in the Neutral Route, suggesting Burgerpants may be exaggerating or that this behavior is only targeted toward him.

Relationships

The Human

Initially, Mettaton actively opposed the human under the assumption that his anti-human combat programming—combined with directive errors—had instilled in him an intense hatred for humans and a compulsion to destroy them. This ultimately proved to be an act, however, as Mettaton later reveals that he actually loves humanity. Nevertheless, he continued to work against the human on his own terms, seeking to claim their SOUL in order to prevent a potential war instigated by Asgore. After their battle, he became confident that the human was strong enough to avert such a conflict on their own.

Alphys

Mettaton and Alphys initially bonded over their shared interest in human culture, and he remains grateful to her for constructing his physical body. Soon after receiving his first body, however, he began to frequently belittle her and mock her interests. Despite this, he owed Alphys enough to play along with her plan—acting the part of a malfunctioning robot—before eventually pursuing his own agenda with the human. In the ending where he is made king, he expresses regret for having been cruel to her before she went missing.

Napstablook

Before obtaining his body, Mettaton was Napstablook's cousin, helping them run the snail farm and living next door to them. The two appeared to be very close; Mettaton originally declared that he would never leave them behind and often referred to them affectionately as "Blooky"—a nickname he continued to use. Although he eventually left them behind in pursuit of stardom, he clearly still cared for his cousin, appearing regretful when Napstablook called into his show to express gratitude for his programs. Once he acquired his permanent new body, he immediately recruited Napstablook to join him on tour so they could stay together.

General Information

Name: Hapstablook (Room name for his house in the game files)

Other Names: Mettaton, Mettaton EX, Mettaton NEO, MTT

Origin: Undertale/Deltarune

First Appearance: Undertale

Latest Appearance: Deltarune Chapter 4

Company: N/A

Creator: Toby Fox

Actor: N/A

Gender: Male

Sexuality: Unknown

Pronouns: He/Him

Handedness: Ambidextrous

Age: Unknown

Birthday: Unknown

Time Period: 201X

Timeline: Undertale & Deltarune Timeline

Homeworld: Earth

Residence

• • Undertale: Hotland (Underground)
  • Deltarune: Hometown

Story Role: Boss, Killer Robot

Legacy: Global Legacy (Mettaton is popular across the entire Underground gaining high ratings)

Influence: Event Influence

Language: English & Monster

Ethnicity: Unknown

Religion: N/A

Classification: Robot, Ghost, Napstablook's Cousin

Species: Monster

State of Being: Regular

Physiology: Robot Physiology

In-Universe Creator: Dr. Alphys

Occupation: Idol, TV Star

Combat Style: Magical Combat

Affiliations: Underground

Enemies: Humans (Formerly in True Pacifist Route)

Height: Unknown

Weight: Unknown

Status: Other in True Pacifist Route and some Neutral Routes (Mettaton is a ghost in a robot's body given to him by Alphys), Deceased in some Neutral Routes and Genocide Route (Is killed by The Human in some of the neutral routes and the genocide route)

Alignment: Chaotic Neutral (Mettaton does not truly care about the plight of monsters, and merely wishes to perform before humans to show their greatness, though they have shown they're willing to get in The Human's way during the genocide run when they posed a threat to humanity)

Protection Level: Global Protector (Fights to protect monsters and humans in the genocide route)

Potential

• Type(s) of Potential: Fixed Potential
• Level of Potential: Fixed
• Description: Shows no notable potential statements or feats.
• Limitations: Nothing notable.

Archetype: Killer Robot

Codex Statistics

Key: Box Form | Mettaton EX | Mettaton NEO

Key Information:

• Box Form: This key covers Mettaton in their box form where they're effectively indestructible.
• Mettaton EX: This key covers Mettaton in their EX form.
• Mettaton NEO: This key covers Mettaton in their NEO form, the form made to eradicate humanity.

Grade: A

Tier

Box FormMettaton EXMettaton NEO

At least 9-C. 9-B through charging. Higher with Magic

At least 9-C. Higher with Magic

At least 9-B, possibly Higher. Higher with Magic

Cardinality: Finite

Dimensionality: 3-D

Power Source: Magic

Attack Potency

Box FormMettaton EXMettaton NEO

At least Bone level (Through the fact that Mettaton is a completely metallic robot). Wall level (Buster) with Charging (Destroyed a wall after charging into it several times upon his first appearance). Higher with Magic (Monsters enact in SOUL battles against humans due to humans in their physical forms being far stronger than monsters). Can ignore conventional durability with attacks to the SOUL (As they are attacking the SOUL; which is the very culmination of one's being)

At least Bone level (Stronger than before). Higher with Magic. Can ignore conventional durability with attacks to the SOUL

At least Wall level (Potency), possibly Higher (Noted to be a human eradication machine, and due to the stat difference this is likely meant to be his strongest form offense wise). Higher with Magic. Can ignore conventional durability with attacks to the SOUL

Durability

Box FormMettaton EXMettaton NEO

At least Wall level (Completely immune to any attack The Human does, took no damage from charging into the wall), Lower if not wanting to FIGHT or cruel intentions (Monsters weaken when they don't want to fight and one with more killing intent and crueller intentions will inflict more damage on them)

At least Bone level, Lower if not wanting to FIGHT or cruel intentions

At least Bone level, Lower if not wanting to FIGHT or cruel intentions

Striking Strength

Box FormMettaton EXMettaton NEO

At least Bone Class. Wall Class (Buster) with Charging

At least Bone Class

At least Wall Class (Potency), possibly Higher

Lifting Strength

Box FormMettaton EXMettaton NEO

Unknown: True Class

Unknown: True Class

Unknown: True Class

Travel Speed

Box FormMettaton EXMettaton NEO

At least Average Human

At least Average Human

At least Average Human

Attack Speed

Box FormMettaton EXMettaton NEO

Transonic (Can tag The Human, who can maneuver and dodge around the Greater Dog's barks, a sound based attack)

Transonic

Transonic

Reaction Speed

Box FormMettaton EXMettaton NEO

Transonic

Transonic

Transonic

Stamina: Limitless (Is a robot)

Range: Standard Melee physically, Tens of Meters with Magic

Intelligence: Supergenius Intelligence (Can outhack Alphys, who could figured out a highly complicated math problem in a couple of seconds, correctly guessed the number of flies in a jar with a glance, and perfectly guessed the number of n’s in Mettaton’s name in a situation where the number of n’s was rapidly growing, while it was all being asked in a row)

Knowledge: At least Grandmaster level

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Powers and Techniques

General Monster AbilitiesUnique Abilities

• Irregular Physiology (Monsters physiologies show they are mostly made of magic, noting that humans have a "physical form", along with having their SOUL directly attuned to their body)
• Magic (All monsters are made of magic and can use and express themselves through magic)
  • Curtain Fire (Monsters can use their magic to make bullet-pattern cards. Monsters are able to develop a large sum of magical attacks to overwhelm the opponent)
  • Creation (Monsters can make weapons, clothes and even food from magic)
  • Personal Domain & Battlefield Removal (When one encounters a monster they get into a fight, a FIGHT is an encounter in a monster's personal domain allowing them to fight humans, this has various rules such as turn-based combat)
• Limited Spatial Manipulation
  • 3-D: Monsters can at times influence the battle box)
  • Transmutation & Healing (Monsters can turn their attacks into healing projectiles)
• Absorption (Monsters and humans can absorb the SOUL as long as the person isn’t the same species as them)
• Non-Standard Interaction
  • Metaphysical Interaction: All monster attacks in Undertale are to the SOUL.

• Resistance to
  • Soul Manipulation (All monsters bodies are attuned to their SOUL thus they are effectively taking hits to their SOUL whenever attacked)

• Superhuman Physical Characteristics
  • Superhuman Strength
  • Superhuman Durability
  • Superhuman Speed
  • Superhuman Reaction
  • Superhuman Lifting
  • Superhuman Energy Efficiency
• Body Control (Has extendable arms)
• Hacking (Could out-hack even Alphys)
• Flight (Mettaton is able to fly with their jet)
• Inorganic Physiology & Cyborgization
• Creation & Explosion Manipulation (Creates a large number of bombs, and mini versions of himself)
• Text Manipulation (Can turn his words into bombs)
• Energy Manipulation
  • Energy Projection (Can produce disco balls which fire lasers)
    • Conditional Attacks (The lasers from the disco ball can be made blue, where blue attacks only inflict harm if one moves)
• Technology Manipulation
• Time Manipulation
  • 1-T: Can rewind time with attacks.
• Electricity Manipulation (Can shoot electricity out of their fingers. Can shoot electrical attcaks out of their SOUL)

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Equipment

Mic, Disco Ball as EX

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Notable Techniques

• Legs: Mettaton EX will create numerous copies of his own legs, sending them at his opponent.
• Mini Mettatons: Mettaton EX will summon tiny copies of his base form which will attack his opponent with deadly heart projectiles.
• Cross Bombs: Mettaton EX will rain bombs down on his opponent. When hit, the bombs will explode into bursts of energy in the form of a '+'.
• Arms: Mettaton EX will summon numerous copies of his arms, which are invincible save for a yellow square which must be hit in order to make them retreat.
• Heart to Heart: Mettaton EX's heart will fly out of his chest, firing bolts of lightning and electricity. Damaging or destroying the heart will also do damage to Mettaton himself.
• Disco Ball: Mettaton EX will summon a giant disco ball which fires lasers at his foes. Lasers of white light will always damage the opponent, but lasers of blue light are harmless to those who stand still. Hitting the disco ball will not damage it, but instead cause white lasers to turn blue and blue lasers to turn white.

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Other

Standard Tactics: In box form Mettaton will shoot electricity at the opponent. In Mettaton EX form, they will use various magic attacks and rewinding time during their attacks. Mettaton NEO is unknown as they let The Human attack first and are promptly killed.

Weaknesses

• Monster Weaknesses: All monsters are weak to an attack with killing intent behind it and if a monster doesn't want to fight, they are weakened greatly.
• Unique Weaknesses: Naturally very vain. NEO has far weaker defenses.

Explanations

Monster Check Stats

Monster's check stats are quite dubious for a couple of reasons:

• Monsters like Glyde give off the implication that monsters are the ones listing their statistics.
• Mad Dummy has a defense stat listed of -40 but notes because they're a ghost physical attacks will fail. One could say the -40 comes from the fact that the dummy's body is that weak, however, the regular Dummy's check stats just has their DEF as 0, there's really no reason why the Mad Dummy should have far lower DEF stats especially during a pacifist route.
• Characters like Napstablook have a defense stat listed but you actually aren't lowering his HP he was just lowering it for you to be nice.
• Toriel's stats are listed at 80 ATK and 80 DEF, the same as Asgore's stats. Yet in one of the endings Unydne with her strength as stated by Sans literally threw Toriel out of the castle. Despite Undyne's stats being 7 ATK and 0 DEF. This would also imply characters like Papyrus are stronger then her as he has an 8 ATK and 2 DEF, and while she does admit Papyrus is pretty tough, it's never really implied to be that Papyrus is stronger then Undyne. Royal Guard members are also shown to have higher stats then her through this logic.
• Undyne the Undying has stats of 99 ATK and 99 DEF yet due to Mettaton's Invulnerable Body, they have a defense stat of 999.

On top of these, genocide route has the check stats differ too with confusing changes, while the human's killing intent is a reason behind this, some characters have their defense stats raise such as Papyrus'. There's also inconsistencies even in these routes, for example The Human at a level 3 killing intent one-shots Toriel yet The Human at level 13 can still only chip damage Asgore.

It should also be noted, the argument that Toriel sent Asgore flying with her fire, has an issue it was an off guard hit which it has been shown off-guard/betrayal kills can one-shot monsters as they lowered their guard.

Magic vs. Physicality

Monsters are mostly made of magic while human beings are mostly made of water making humans with their physical forms far stronger then them. However humans have lost the ability to use magic by proxy.

Monsters bodies being made of magic has their body physically attuned to their SOUL. Due to this, monsters that don't want to fight have their defenses weaken and one with more killing intent and crueller intentions will inflict more damage on them. This is due to a monsters SOUL being made of love, hope, and compassion.

Monsters bodies being made of magic also makes it where they do not possess enough physical matter to take concentrations of determination.

In the Undertale 10th Anniversary Livestream Gerson reveals that humanity once had magic too but creating the barrier that separated humans and monsters caused them to use up all their magic.

Battle Records

0 - 2 - 0

VictoriesLossesInconclusive

None.

• Neutral/Pacifist Human - Fight
  • Conditions: None.
  • Location: CORE

• Genocide Human - Fight
  • Conditions: None.
  • Location: CORE

None.

Versus Threads

0 - 1 - 0

VictoriesLossesInconclusive

None.

• Rubber Band - Thread
  • Rules: Standard Battle Assumptions, Rubber Band was assumed same tier and speed as Mettaton, Mettaton was in his EX form.
  • Overall Consensus: Mettaton would have a hard time beating rubberband due to its ability to manipulate the battlefield.

None.