Character design Comic book Fictional character Fan art Comic character Ninja Turtles Comic art Character portrayal Mutant ninja Pop culture Teenage Turtles Teenage Ninja Turtles Teenage Mutant Martial arts Unique design Mutant turtles Ninja Turtles Mutant Ninja Turtles Teenage mutant turtles Comic characters Fictional portrayal Teenage Ninja Teenage Mutant Ninja Book characters Comic book characters Cartoon portrait Superhero art Turtle character Fictional character portrayal Action poses