They can be one you’ve seen on rollplay or other online show, one your gm made or and i think this is where im going to start, one you made for your players.
My absolute favorite was named; Jaida “The Hound” Combs. A charachter i made for my players. she was a part of an underground mob type organization and she worked for her boss; “The Maestro”.
the party encountered her and maestro and transported them across the sector (stars without number) and one of my players decided to have some “fun” with her. Jaida’s life being kinda freespirited(cooped in a small space with nothing to do) Jaida was all in. upon leaving my player asked me if she would stay i said only if you(rolling in the background). i got a crit(houserule). facepalm
she was way to powerful for combat(lvl9 pyscher) so i modified her behavior to be that of someone who knows they could beat up everyone in the galaxy but just chooses not to. so she sat around the ship and sent info back to her boss, which was fun during the faction turn but i digress.
a new player entered the group (alot had actually so i had tons of extra charachter sheets) but i knew this player would stick around. so instead of giving them one of those i said here you play Jaida shes…
they took it, and my little seed of jaida blossomed into a glorious mob boss killing fashionista who doesn’t care about anyone but cecilia.