George Kittle is an agent of chaos.
At least, that's his goal on the football field.
The 49ers' fun-loving star tight end took the NFL by storm last season, racking up 88 catches and 1,377 yards, an NFL single-season record for tight ends.
Kittle's rise to NFL stardom is a credit to his athletic gifts, his work ethic and, at least partly, his favorite comic-book villain.
The Iowa product is a huge Batman fan, and he does his best to make the Dark Knight's archnemesis -- the Joker -- his gridiron alter-ego.
"I don't try to channel all the Joker, obviously, because he has some issues," Kittle told ESPN's Nick Wagoner.