I can tell you some of my characters although much of their lives came about through mods:
Ninjamerc- Slightly schizo packrat extraordinaire. He cleaned every single thing out of locations and took them home to shove into the file cabinet. Do you have any idea how long it takes to carry everything inside L.O.B. Enterprises back to Megaton with only RL-3 as a follower? You don't want to try it :/
Eden- Slaver. Everyone was worth caps to her, even the short npcs. She kept Moriarty and Dave as pets and regularly sent them off for training sessions. Liked cooking with punga fruit in her spare time.
Fiona- Serial killer housewife who didn't realize the war happened. She wore pre war clothes and lived in a clean and decorated home when she wasn't stabbing people in the neck. Or back. Or ass.
Bionica- Never met a drug she didn't like. She was Murphy, Cutter and Azhrukal's best customer. Was involved in a messy love triangle with Clover and Bittercup.
Katrina- hoker in love with Mr. Burke, evil through and through. Pushed every big red button she saw and reveled in the destruction. Explosives all the way.
Victoria- Energy Weapons specialist born into the Enclave. She had a pet eyebot long before Ed-E existed.
Anja- Evil Regulator and Real Estate baron. She killed everyone who owned property because she wanted it for herself.
Rain- Vampire Raider who only feeds on fellow Raiders. Spends days underground or in Raider hangouts. By night she sets things on fire with a sword.