Coop

A 10-year-old boy who thinks Kat is evil. He tries to stay out of trouble, but is often humiliated and injured when trying to prove Kat's true identity. He gets the blame for everything Kat ruins in the house. Coop sometimes thinks Kat plans is to take over the world, but Kat's actual plans are to return home to his hhome planet in outer space or just to get food for himself. Coop misunderstands Kat's action's most of the time. Coop's father, Mr. Burtonburger thinks that Coop is insane for thinking that Kat is an evil alien. Only Dennis, Coop's best friend, believes in him. The Burtonburger's neighbor, Old Lady Munson, hates Coop but favors Millie. Coop has brown hair and blue eyes. Millie has blue eyes also and black hair with red frame glasses.