Morrigan
From The Stargate Omnipedia
One of the System Lords, about whom little is currently known. Morrigan is well-known among the Goa'uld for using her human servant to draw out strategic information from the servants of her enemies -- as she did with one of Yu's previous lo'taur slaves.
DETAILS
PLAYED BY - Bonnie Kilroe
FIRST APPEARED - Summit
KEY EPISODES
Summit - Morrigan attends the System Lords' summit.
Last Stand - Morrigan attends the System Lords' summit, voting to allow Anubis back into their ranks.
Revisions - SG-1 visits a planet once under the control of Morrigan, which has long been deserted by the Goa'uld.
It's Good To Be King - According to the Tok'ra, Morrigan has capitulated to Baal in his war against the System Lords. She and her force may well be in his service now.