Barney Stockman is the red-haired twin brother of Baxter Stockman in the 1987 TV series, he also is a mad scientist, and he threw fits whenever someone confused him with Baxter. He claims to be the good-looking one. He somehow knew his brother got turned into a fly, but is a bit inaccurate on the details(he believes Baxter turned himself into a fly by accident, when it was actually because Krang attempted to disintegrate him, but he got mixed up with a fly). His only appearance is in Raphael Knocks 'Em Dead, which in the beginning while the Turtles were channel-surfing Barney was seen mixing chemicals, suggesting he has his own science show.
In the episode, he is used by Pinky McFingers and his gang to kidnap comedians and use a machine to enhance the hilarity of their jokes. In the end, he is arrested and sent to jail.