The Dude Mutants (Dudants?) From X-Men: Apocalypse
What to wear: Can you imagine how cool a Quicksilver costume would be (for instance: gelling your silver hair back to make it look like you're running at top speed)? Whether you dress up as him, Cyclops (red sunglasses), Nightcrawler (blue face paint), or Angel (silver wings), you know your outfit is going to be a winner.
How to act: Quicksilver is a joker, and Cyclops is a cocky, well-meaning jerk. Nightcrawler is timid and sweet, while Angel is a mean-spirited villain in over his head.