From the original TMNT collection we got King Lionheart. A good guy in the series and one rather colourful character.
This royal robed roughcat is the result of Shredder's dirty work. Formerly a Shakespearean actor, Shredder tried turning this cat into "king of the mutants." But the Turtle dudes busted loose this beast before Shredder could give him the ol' whammy.