Toy Worry (Issue #3) In a crossover with the Toy Story franchise, Boo is awoken from her sleep by Sid Phillips (though he is never directly named) coming through her closet carrying a duffel bag. He is on the run from the Monsters and asks if he can hide, with Boo thinking it's a game of hide-and-seek. Mike and Sulley arrive in the room to search for Sid, who has discovered the Door network and is using it to steal toys from kids, threatening the monsters ability to make kids happy as well as the safety of the Monster World in general.