Drake got done-up like his own DAD for a Halloween party at Poppy nightclub in West Hollywood last night -- a mustache and skull cap and all. The rapper made his way into the A-list party without too much mugging for the cameras, unfortunately ...


Wiz Khalifa wasn't afraid of our lenses -- surprisingly, because he was getting pretty cozy with a lady who isn't his girlfriend!


Todd Gurley was some kinda swaggy pimp pizza delivery dude. We don't really get the costume, but we love it ... and how convenient for those midnight munchies to have some much pizza at the ready!


Guess who this is! Dude would NOT break character! Click through for his name ...