Speed Racer, Jr. In the beginning no one knew about Speed, Jr. because he was hidden by the media from his parents and even he didn't know he was Speed Racer's son until told to by his headmaster and uncle, Spritle Racer (Speed Racer's youngest brother). Speed Jr. is like a living car inside for whenever in a race he will calculate the track and win just like his father. His older brother is X Racer (whom is named after Racer X/Rex Racer, Speed Racer brother's and competitor) and his mother is believed to be Trixie for Speed Racer had a crush on her and was dating her. Speed, Jr. continues to race with the help of his friends, Lucy and Connor and Chim-Chim the robot while looking for his father who disappeared years ago.