Ronald "Ron" Stoppable has been best friends with Kim since preschool and, as revealed in the opening of "Larry's Birthday", live next door to each other. He serves as Kim's sidekick whenever they go on missions. Ron is a cowardly, goofy, clumsy, and accident-prone teenage boy, but he has saved the world on his own. He owns a pet naked mole-rat named Rufus who is also best friends with Ron and Kim and often helps them on their missions. In interviews, Bob Schooley and Mark McCorkle, the co-creators of Kim Possible, summed up Ron's role as comic relief for the entire series until the finale because, "He can't do anything." Ron is not as popular as Kim is at school and tends to be ridiculed and ignored by his peers. He does, however, join the football team in his senior year, having previously served as team mascot, and is given the athletic nickname of "Unstoppable Stoppable". He has an adopted younger sister from Japan named Hana, who turns out to have mystical abilities of her own. In a few episodes, it is revealed that Ron and his family are devoutly Jewish.