Shaun

Shawn Stoppable is a minor character from the show Kim Possible. Shawn is the cousin of Ron and the younger brother of Reuben. He is 7 years old, and he's voiced by Tara Strong.

Personality
He has the personality of a troublemaker, and has apparently been a constant source of torment for Ron at family functions. (Ron still remembers the time Shawn poured gravy down his pants.) He owns a pet iguana who apparently has made numerous attempts to eat Rufus. Unfortunately, since Shawn is still a little kid, Ron's complaints because of his behavior have been pretty much ignored.

Ron was unable to ditch him until Kim agreed to be Ron's date at his cousin Reuben's wedding, thus sparing Ron from having to sit at "the kid's table" (in Ron's words). Ron also resorted to using the Attitudinator device to make Shawn less annoying.

Shaun's last name is never given, though it is presumed to be "Stoppable".