Teenage Mutant Ninja Turtles (Tmnt) (2011 Idw) #123 Cvr B Eastman

Leonardo stumbles across an underground fight ring in Mutant Town that caters to both humans and mutants. When Casey Jones convinces Leo to join in, he's startled to find that one of his opponents is someone of grave importance to him! Idw Publishing
(W) Sophie Campbell (A) Jodie Nishijima (Ca) Kevin Eastman