10 Best Minor Stargate SG-1 Characters

10. Osiris/Sarah Gardner (Anna-Louise Plowman)

Introduced in the fourth season and appearing a handful of times afterwards, Dr. Sarah Gardner was an old flame of Daniel Jackson's and they are reacquainted at the funeral of their old Egyptology professor. While getting to know one another again, Daniel discovers that their professor was working on was an ancient Goa'uld containment jar, which had a living symbiote in it. But that symbiote is missing.

It would later be revealed that the symbiote was inside Sarah, she was possessed by Osiris, who threw in her lot with Anubis, the most powerful of the Goa'uld. She would represent his interests several times and prove a foil to Daniel Jackson in particular. Eventually, after several years of possession, Daniel was able to rescue Sarah and release her from the clutches of Osiris, allowing her to live a normal life again.

Anna-Louise Plowman's portrayal of Sarah/Osiris was both charming and ruthless and it's a shame she didn't get a few more appearances.