Slash is the fifth mutant turtle to appear on the show. Co-creators Kevin Eastman and Peter Laird allowed his debut because Slash is, from another Dimension, didn't join the 4 Ninja Turtles, and unlike Mona Lisa Shlash is a male character.
Slash's design is considerably different form his action figure and Archie comic design. This version features a mask, shoulder pads, wrist pads and knee pads that are metallic and has buck teeth sticking out of the side of his mouth. This version of slash also wields Shredder's xiaolin swords.