A Matoran slave was a Matoran infected by Antidermis. In Island of Doom, they are depicted as having sickly green eyes, standing stock still until given orders, and then would keep at it until it was done. In the 2006 games, they are completely black/brown versions of Piruk with red eyes invariably. On Voya Nui Online Game, they also didn't have any weapons. The first to be infected was Dezalk: only the Voya Nui Resistance Team was not infected. All have since been cured.
- Despite the fact that the whole island of Voya Nui had been enslaved, they have all been depicted as a recolor of Piruk, rather than having an individual design.