Key: Illithids | Ulitharids | Elder Brain | Elder Brain Dragon | Technology
Tier: At least Low 8-C | Varies from 8-C to TBA | Varies from 7-B to Low 6-B | At least 6-C | Varies from High 4-C to High 2-B
Name: Mind Flayer, Illithid ("mind flayer" or "mind ruler" in undercommon), ghaik | Ulitharid ("enlightened ones" or "noble devourers" in undercommon) | Elder Brain
Origin: Dungeons and Dragons
Sex: Sexless[1]
Age: Varies, ultimately the origin of mind flayers predate the multiverse due to their heritage of the Far Realms
Classification: Abberation, Eldritch Monster | Noble in Mind Flayer society | Hivemind of the Mind Flayers
Status: Alive
Alignment: Lawful Evil
Dimensionality: 3-D
Attack Potency: At least Small Building level (Has challenge ratings of either 7 or 8, putting them above creatures who can cast Conjure Barrage) | Varies from Building level (Having a challenge ranking of 9, they should be comparable to characters who can cast Cone of Cold) to TBA (Stronger ones have a challenge rating of 12, putting them above...) | Varies from City level (Possess challenge ratings of 14, making them comparable to Legendary Dragons. Can also occasionally overpower and attach to dragons) to Small Country level+ (Stronger Elder Brains have a challenge rating of 25, making them comparable to Father Llymic, who blotted out the sun)
Durability: At least Small Building level | Varies from Building level to TBA | Varies from City level to Small Country level+
Striking Strength: At least Small Building Class | Varies from Building Class to TBA | Varies from City Class to Small Country Class+
Lifting Strength:
Travel Speed: Unknown | Unknown
Combat Speed: Hypersonic+ to High Hypersonic+ (Can battle against Rogues who can cast Call Lightning) | Varies from Relativistic to FTL (Can dodge light-based attacks such as Wrath of the Moonday Sun) | At least FTL (Superior to before)
Reaction Speed: Hypersonic+ to High Hypersonic+ (Can dodge Call Lightning) | Varies from Relativistic to FTL | At least FTL
Stamina: Superhuman (Can take part in an inquisition, which is similar to that of an adventure) | Superhuman | Superhuman |
Range: Tens of Meters with abilities | At least Tens of Meters with abilities | Kilometers, High Multiverse level with certain spells
Intelligence: Varies from Extraordinary Genius to Supergenius (All Mind Flayers are connected to their respective Elder Brains, which maintains all knowledge of their entire colony as well as all past residents of their colony; this includes sorcerers of immense skill capable of outclassing beings on the level of Beholders. Developed technology that can merge multiverses)