Robert Griffin III Shows off New 'Teenage Mutant Ninja Turtles' Tattoo in Photo

Robert Griffin III loves the Teenage Mutant Ninja Turtles so much he's had them permanently inked on his body. 

The free-agent quarterback shared a massive TMNT tattoo that completes a sleeve on his left leg over the weekend.

Griffin's left leg already honored Goku and The Hulk. TMZ Sports reported Griffin underwent a nearly 12-hour procedure to add the TMNT to his leg Saturday before coming back for another five-hour session Sunday to add a Black Panther tattoo.