Sixth
From The Stargate Omnipedia
Female humanoid Replicator, the sixth to emerge from the intelligence of the Replicators after the seized control of the Asgard planet Halla. She is not one of the first four who got the chance to enter the minds of SG-1 in the hopes of gaining information about the realms of the team's home galaxy.
DETAILS
PLAYED BY - Shannon Powell
FIRST APPEARED - Unnatural Selection
KEY EPISODE
Unnatural Selection - Sixth sits with Fifth during the opening meeting between the humanoid Replicators and SG-1.