Avengers Assemble! Button measures 1.25 inches in diameter and shows off the powerful phrase, 'AVENGERS ASSEMBLE!' It is a powerful phrase because it will immediately conjure up all sorts of heroes. There's Buckethead, Flagman, Viking Lord, and the Watermelon. Oh wait, those are their codenames. I meant to say Iron Man, Captain America, Thor, and the Incredible Hulk! How silly of me.