Undefinition, real name unknown, in an unaffiliated Negator.
Appearance[]
Undefinition's appearance remains unknown.
Personality[]
Undefinition's personality remains unknown.
Plot[]
History[]
At some point, Undefinition was encountered by Billy, who harmed or threatened them sufficiently for him to able to copy the negation using Unfair.
Ragnarok Arc[]
During Ruin's assault on Union HQ, Billy used his copy of Undefinition to help Tatiana.
Powers & Abilities[]
Undefinition (?): This ability allows the user to negate the definition in an something's form, specifically its edges, causing it to become "fuzzy". This was seen used against a shell made by Blood, which caused it to become separate, jagged blotches instead. The ability was only seen once, so further details are unknown.