Teenage Mutant Ninja Turtles: Leatherhead — IDW Publishing
Issue: #1
As the Turtles continue to get used to a world leading the Foot Clan post-Shredder, they return to the Technodrome to monitor the revival of the Utroms on Burnow Island. They are surprised to meet a new mutant–Leatherhead! Will the mysterious mutant be friend or foe? Collects issues #56–60.
Creators: Michael Walsh, Freddie E. Williams II, Bobby Curnow, Shawn Lee, Alonzo Simon, Alex Kotkin, Paolo Villanelli, Pablo Tunica, Tomi Varga, Urszula Mos, Mateus Santolouco, Cory Smith, Justin Eisinger, Kevin Eastman, Dave Wachter, Ronda Pattison, Gilberto Lazcano, Tom Waltz, Damian Couceiro
Characters: Donatello, Leonardo, Michelangelo, Raphael, April O'Neil, Sergeant Granitor, Harold Lillja, Metal Head, Ch'rell, Jennika, Churk, Leatherhead, Angel, Kitsune, Traag, Alopex, Fugitoid, Mouser, Krang, Aka