Jesse Brightman is a teenager who lives near Dexter and Rita's house. There is a vandal in Dexter's community, and he thinks that it is Jesse. He must deal with this vandal thing so that he can come and go at late hours without the Neighborhood Watch thinking it's suspicious behavior. Dexter enters Jesse's house, only to discover that the vandal is actually his father.
Astor also seems to have some kind of romantic interest in Jesse, even though he is much older than her. In "Blinded by the Light," they are seen talking, and Jesse tells her which college he will be attending.
Jesse, apparently, is a rebel because his mother died.