We have a winner for BIGGEST Comic-Con nerd -- it's gotta be Dwight Howard ... who's roaming San Diego as "Predator."
Yeah, unless there's a 7-footer dressed as the Alien (which would be awesome) ... we're guessing 6'11" Dwight is king of the hill for cosplay fans this weekend.
Check out the clip ... Dwight told us about all the time and effort he put into his get up. Hint: not much.
Fun fact: Dwight isn't even as tall as the guy who filled out the real "Preadator" costume. Kevin Peter Hall stands 7'2" -- though he probably doesn't put up 19 pts and 10 boards per game.