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Ultimate Slayer
Biographical information
Ethnicity

Clone

Aliases

Rat King

Weapon(s) of choice

Flamethrower

Physical description
Species

Mutant human clone, with rat DNA

Gender

Male

Hair color

Black

Eye color

Black

Out of universe information
Era(s)

2003 games

Publisher

Konami

First appearance

Teenage Mutant Ninja Turtles 3: Mutant Nightmare

Voiced by

David Zen Mansley

Teachers and Students
Teacher(s)

Bishop

  [Source]
The Ultimate Slayer serves as the penultimate boss of Teenage Mutant Ninja Turtles 3: Mutant Nightmare's second chapter, "Bishop's Gambit". It also appears as a recurring boss in the DS version, at one point fighting alongside Agent Bishop himself.

Although The Ultimate Slayer would go on to become Rat King in the cartoon, he never does so in the games.