Why don't you take a holodisk image? It'll last longer.
Sydney is a mercenary who specialized in relic hunting in the year 2277, and a possible temporary companion in Fallout 3.
Sydney is an independent mercenary who specializes in obtaining relics. She prefers going for the more dangerous scores (like the Declaration of Independence) and takes risks. She is beautiful, but finds men approaching her irritating. She is a loner. She prefers not speaking about her dark past. When she was very young, her mother was raped and killed by raiders. She spent years perfecting her combat skills and never welshes on a deal.
As a child, Sydney was orphaned when her father was killed during a weapons trade off at the Statesman Hotel. She had to wander D.C. alone, but she was able to handle herself because her father had taught her how to handle and maintain guns, and to upgrade them since she was young. Sydney then became a relic hunter and did some work for Abraham Washington. In her own words: "After he loaded me up with caps, I got piss drunk, got laid, and was happy for the first time in a while. I haven't looked back since."
A note from Little Moonbeam's father is a note Sydney's father left her when he was dying in the Statesman Hotel. If you give it to her after she tells you her story, she will give you Sydney's 10mm "Ultra" SMG.(This process can be repeated as many times as one likes. Simply reselecting the conversation option about Sydney's father gives the PC access to an infinite supply of Sydney's 10mm "Ultra" SMGs.)
If Sydney remains alive at the end of the quest, she will travel from Rivet City to the Ninth Circle in Underworld and set up shop as a vendor, stating that she likes to hang out at Underworld because the ghouls do not constantly hit on her.
If you enter combat with the residents of Underworld while Sydney is a vendor there, she will fight on your side.
She can be very helpful in exploring the ruins of D.C. at lower levels, especially when used in conjunction with other companions such as Dogmeat and Charon due to their lack of a Karma requirement. However, it is advisable to carry a sizable supply of stimpaks to keep her healed through dialog, and to watch her health carefully, as unlike a permanent companion she does not automatically regenerate health.
It is possible to pickpocket and reverse pickpocket Sydney for items, after the super mutant attack, but before speaking to her. However, once you recruit her as a companion, pickpocketing, or reverse pickpocketing her is not possible until Stealing Independence is concluded with Sydney surviving. Also, if you decide to give her a different weapon other than Sydney's 10mm "Ultra" SMG, she will use up any ammunition you give her.
"Keep your eyes on the mission, and off my ass, please."
Sydney is a reference to the character Sydney Fox from the TV show Relic Hunter.
pcps3xbox360 There is an exploit that makes it possible to receive an unlimited supply of Sydney's 10mm "Ultra" SMG in perfect condition and 10mm ammunition. It can be found under the Sydney's 10mm "Ultra" SMG article.
pcps3xbox360 You can't pickpocket Sydney after recruiting her - neither during the quest nor after completing it. You just get the talk option when crouching.
xbox360 When she walks into the Museum of History she sometimes gets stuck on the stand where the dinosaur skeleton is or on a bench in the same room.
ps3xbox360 Sydney can get stuck on her way from Rivet City to Underworld. Usually by a train in the metro tunnel she travels through to get to the Mall. She can be unstuck by pushing into her and talking to her and backing away to reset her walk path. It's a little tricky and may take a few tries but eventually will work.
xbox360 When she's in the bar in Underworld, she can sometimes die and will be slumped over the floor. It is unknown what causes this.
pcxbox360 Sydney can get stuck when exiting Oasis. Usually close to the door. If you go back towards the gazebo and fast travel out of Oasis while near the gazebo she will arrive with you, however if you fast travel and are near the Oasis door she will still be stuck in Oasis.
xbox360ps3 Sydney may disappear during the quest, this is sometimes due to her not being able to climb rocks or jump as you do, waiting at one spot for a short amount of time may help or you can reload a previos save.