The Doo Bot is the tritagonist of the Sonic Underground episode "Haircraft in Space." She is a robot who does hairdos for customers, but what makes her believed to be an antagonist is that she hypnotizes her customers into revealing their secrets, but when Sleet and Dingo sneak a tape inside her, this includes Sonia revealing where the rebel base is. But even so, the Doo Bot isn't really an enemy.
Eventually, when the tape gets removed, the Doo Bot hypnotizes Dr. Robotnik, Sleet, and Dingo into forgetting what happened to the tape.
It is unknown who did her voice.