Jimmy "B-Rabbit" Smith Jr. is a fictional character from the movie 8 Mile, which was released in 2002. He is portrayed by the rapper Eminem, who plays a young aspiring rapper living in Detroit, Michigan. The character struggles with personal and professional challenges while trying to make a name for himself in the competitive world of hip-hop. B-Rabbit's journey is marked by his battles in freestyle rap competitions, where he faces off against other local rappers. The film explores themes of ambition, identity, and the impact of socioeconomic factors on creativity and success. B-Rabbit's character is often seen as a representation of the struggles many artists face in pursuing their dreams.