Ms. O is the temporary name of one of the new art style characters. She has Mediterranean features and long, curly dark red hair. She wears a green dress with a dark green jacket, a gold necklace, gold bracelets, and gold earrings.
At this writing, the SpyParty community has yet to latch onto a solid nickname for her. Due to her red hair and green clothing, some players have taken to calling her "Irish," though Chris Hecker rejects that name. The internal game files call her "Sofia."