Rosalyn Bain

Rosalyn Bain was the wife of Reginald Bain, mother of Sophie Bain and Audrey Bain, adopted mother of Tovar, and a tactics instructor at Starfleet Academy.

She was also, unbeknownst to her husband, a Section 31 agent.

Rosalyn was sent by Section 31 to protect both the Federation's peace talks with the Breen and her husband's life. With the help of her adopted son, Tovar, who already knew that she worked for Section 31, she was able to stop a holographic assassin. Despite this, Bain decided to leave Breen and let other diplomats handle the peace talks. Before leaving as well, Rosalyn cloaked herself and beat up Thot Phul, who had hired the assassin. (Mrs. Bain, You're Needed [BG])

Since she didn't want Bain to even consider going back in time, she used Section 31 technology to go back to the USS Secondprize when Jaroch was captain and got saved a copy of his pattern in a transporter buffer, which she then sent to Bain. He used that to create a body for he Interloper life force to go into when it was transferred out of Tovar. (Mind If I Play Through?, Aren't You Dead? [BG])

While fighting Fubar, a Cardassian terrorist who was attempting to crash a shuttle full of explosives into Paris to kill the Federation President, Rosalyn was able to divert the shuttle's path, crashing it near her home in England so that she'd be back in time to greet Reginald and Tovar. Fubar escaped being killed and got the drop on Rosalyn in her own home, knocking her out and then tying her up. He was delighted by the past lives of Tovar, who cooked and cleaned for him. Fubar planned to take Tovar with him after he killed Rosalyn. Tovar was able to get his past lives to work together to build a device that coated Fubar in a shell of quick-drying chocolate, rendering him immobile. He was then beamed away and imprisoned by Section 31. (The Ties That Bind [BG])

After the James T. Kirk Hologram escaped Section 31 custody and tried to start a holographic uprising, Rosalyn intercepted his program while he was fleeing the Mega-Sim. She then returned him to Section 31 custody. By this time, she had recruited her daughter Audrey into Section 31, who was under cover as a Mega-Sim custodian during Holo-Kirk's attempt to free its holograms. When Audrey expressed how difficult it was to pretend to help Holo-Kirk and lie to her father, Rosalyn assured her that she would get used to it. (Illusions Of Grandeur - Part Two [BG])

Section 31 was concerned about the true motives of the Vulcan Alliance, so Rosalyn had Pratello Maddox try to convince Bain to send Commander Prosak to infiltrate the Vulcans. She was unsuccessful but gave Rosalyn the idea to have Tovar convince Bain. She went to see Tovar in person, interrupting two different dates with Lieutenant Jamie Torgerson to talk to her adopted son. She secretly went to Romulus and was able to stop a mind meld brainwashed Commander Prosak from assassinating the new Romulan Praetor by knocking her unconscious. She then told Tovar to take the credit for stopping Prosak. Prosak didn't remember fighting Rosalyn, but she was now terrified of her for reasons she didn't understand. (Breaking In Is Hard To Do [BG])