Commander Quark was an early opponent of the Explorer and its crew. Persistent, but ultimately ineffective against the Voltron Force. Quark once caused the destruction of an uninhabited planet that the Drule Empire and Humans were competing over.
- Curiously, his death scene is included in the American Voltron release, but the scene was incongruously dubbed over, with Quark saying, "I'll be back," before his ship explodes. A member of the Voltron Force later states, "Quark got away again."