Slayer

Slayer is a clone that bishop had create of himself and appears in the episode Bishop's Gambi .

he fights against the turtles and after defeated he appears in the destruction of the base, and then



he appears like the rat king, they never explain how he controls the rats, but its maybe because he wascreated with splinter´s DNA, and like he is a rat maybe somehoe he has a little rat on his blood