Its not always easy to pick out OBJ's tattoos. The man is covered in them, and his football gear always keeps them from view. But the man has a veritable college dorm room's worth of inspirational figures on them.
You can pick out Martin Luther King Jr., Barack Obama, Bob Marley, Prince, Malcolm X, Lil Wayne, and even Heath Ledger's version of The Joker. But maybe the best involves two people in the same scene: Allen Iverson immediately after he clowned on (now Cavs coach) Tyronn Lue in Game 1 of the 2001 NBA Finals. It seems to have...left a mark on him.
If you want to peep the whole collection, here's OBJ's album featuring more (Tommie Smith's fist is a particularly nice touch):
Whoever his tattoo artist is, is clearly the GOAT. Now all that OBJ has to do to keep those faces from deforming is stay in his 25-year-old shape for the rest of his life. Easy.