The Slavemaster is a character from He-Man and the Masters of the Universe.
The Slavemaster is an intergalactic cyborg criminal who travels from one planet to another, capturing and enslaving the inhabitants to mine precious minerals for him. While he is not as physically imposing as his minion Jawbreaker, he rides around in a heavily armed and armored hover chair and carries several weapons.
When the Slavemaster captured Orko, he was not impressed with the Trollan's work in the mines and sent Jawbreaker to capture the strongest man on Eternia. He intended to leave the planet with his riches in 48 hours, but He-Man (who had allowed Jawbreaker to capture him so he could get closer to Orko) freed the enslaved miners and destroyed the Slavemaster's robot guards and hover chair. The Slavemaster and Jawbreaker were apprehended and taken to Castle Grayskull, where the Sorceress sent them back to their homeworld to stand trial for their crimes.