Osama Bin Laden is a villain in The Walking Dank. He is the leader of the underwater terrorist group Alquda. He originally was a human who orchestrated the Twin Tower attacks. America then killed the shit out of him and threw his body in ocean. It turns out though that Bin Laden's body was thrown in an underwater nuclear base and his body morphed with a crab giving him crab powers. He first showed up in season 5 and has been causing trouble ever since.
Powers-Osama can give give a powerful clawed handy dandy. His crab powers also allow him to breathe underwater, and shoot crabs out of his penis.