Ok first I was upset by this because it would be mean to say a child actor is annoying but it ment the character they played, ok so then I choose Short Round.
All the kids in The Goonies are annoying as all heck, on this list it is the kid from The Mummy Returns and The Temple of Doom, and to be clear I mean the characters not the child actors.
Veruca Salt is the meanest nastiest girl ever, gladly she is fictional there could not be a real person like her. She gets my vote as most annoying child character in movie history. lol
OMG! Alex of The Mummy Returns is infuriatingly annoying, yes Short Round is annoying but Alex makes no bones that he is trying to annoy you in my opinion, Short Round has no idea he is annoying. lol