Coming over like Blakes� 7�s Servalan on steroids, Peacekeeper Commandant Mele-on Grayza has a commanding presence. Her high rank, (and her trick of turning men into mindless sex-slaves with pheromone-laden sweat) make her an adversary to be respected.

Intent on seeking a truce with the Scarrans, she saw Scorpius� pursuit of wormhole technology as a futile obsession. With the two thrown into inevitable conflict, she usurped his authority and cancelled his project. Scorpius came off worst - being reduced to no more than her plaything.

She didn�t take too well to Crichton pointing Wynnona at her either, but what she wants from him isn�t clear. Is it revenge? Technology? Or something rather more�

Key episodes: Into the Lion's Den part 1, Into the Lion's Den part 2, What Was Lost part 1.

Read our actor profile of Rebecca Riggs.