Octavia was a KAOS agent in the episode, "It Takes One to Know One". Her modus operendi was to seduce the number two man of CONTROL into telling her all he knew, and then ditching him after revealing her status as an agent. She was succesful twice, and then she met the new number two man of Control, Hymie the robot. She and Hymie left the office together, not long before Max and the Cheif came rushing in to warn him. Max found her compact, which she had left behind. What he found in the cosmetics case revealed Octavia's true identity. A robot. The same type as Hymie.
It turns out that Hymie and Octavia have real feelings for each other and Hymie even offers to elope with her. But Octavia insists that it just wouldn't be right. A KAOS robot and a CONTROL robot married? She apologizes to Hymie right before self destructing.
At the end of the episode Hymie has rebuilt Octavia so that she looks just as beautiful as before, however her voice box appears to have problems. The closest to her own voice that is possible is Max's. needless to say this is not exactly what Hymie wanted. It is unknown what happens to Octavia as she never reappears.