Scrag was a member of Bebop and Rocksteady's gang. He appeared in the 1987 TV series episodes "Turtle Tracks", "Enter the Shredder", "Hot Rodding Teenagers from Dimension X" and "Shredder & Splintered" (in which he was mutated into a bat).
It is unknown what happened to him after "Shredder & Splintered", but it was shown that Scrag was briefly turned back into a human, when Shredder was showing the Turtles and Splinter what will happen if a mutant is hit by his Retromutagen Ray Generator. But he is seen as a bat again later, in a cage with the other mutants.
- As a noun, the word "scrag" means a person with a thin appearance. As a verb, it means to beat someone up. Both definitions fit Scrag as he is very skinny and is a punk.
- His mutant form resembles Wingnut's Archie comics counterpart minus the wings.