Teenage Mutant Ninja Turtles Universe — IDW Publishing
Issue: #21
Find out what became of the Triceratons after the Invasion! Will they get along with their new neighbors or become the first victims of a new villain?
First appearances: Ma'riell
Creators: Pablo Tunica, Patricio Delpeche, Nathan Greno, Jeremy Colwell, Sabine Rich, Caleb Goellner, Freddie E. Williams II, Mark Torres, Ronda Pattison, Shawn Lee, Bobby Curnow, Paul Allor
Characters: John O'Neil, Ch'rell, Churk, Zom, Donatello, Ma'riell, Woody Dirkins, Kleve
Story arcs: Lost Causes