Personality:
Outwardly, Sibyll is charming, friendly and ready to give you a winning smile. She likes being around others and is often willing to lend an ear to someone who needs help. The other side of the coin paints a more interesting picture of Courier Six. Having been rendered completely vulnerable at the start of her new life, she's vowed never to let herself be put in such a position ever again. The friends she makes are less true friends and more resources she can use to keep herself in control. Her intensity, iron will and unwillingness to let go drive her to destroy whoever she deems to have crossed her at any cost.
She's started to develop an odd fixation on someone in the Mojave.
Canon History:
Benny's bullets to her head gave Sibyll a significant case of amnesia. She's not even entirely sure "Sibyll" is her real name, but she likes it, so she'll keep it.
Since then she's;
-Aided Boone in his quest for revenge in Novac
-Had the two Khans who helped capture her killed after negotiating a 'truce' with them (parted ways with Boone at the same time)
-Gained entrance to the Lucky 38
-Confronted Benny at the Tops only for him to escape on her
-Fought and killed Benny in the arena
-Accidentally destroyed Helios One (It was a mistake!)
-Killed House
-Vanished for a week in the Sierra Madre
-Gained loyalty from the Boomers
-Went on vacation to Zion for several weeks