John Mulaney: Mister Whatever is a stand-up comedy show featuring comedian John Mulaney at the Cross Insurance Center in Bangor, Maine. The performance presents Mulaney’s signature blend of sharp observational storytelling, character work, and polished stagecraft in a large-capacity New England arena setting. It is notable for bringing a nationally recognized stand-up headliner to Bangor’s riverfront venue, offering a major entertainment event for the region.