Ple-Sen
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Okay, off the top of my head, just based on names:
Halmeldir the Invincible
Geh'adj the Buried
Scorpion and Santa Claus from the recent one
Latro the Choked
Added 9 minutes later
And Arц also had:
A sailor with a hairy friend and a girlfriend who was killed by Revan (but that's from my first campaign, which you weren't in)
An elven alchemist from the Mentha game
The Coward, the Fool, and the Veteran from the Numbers campaign
Latro 2.0, now with a taste of death (meaning it's no different from the original)
A greedy elf and his adopted son
Herostratus from Nebka's campaign
Arbalest, Mironega, and her niece
Pointy-eared Latro from my second-to-last campaign
A pickup artist from OK
Lysander, whose questline talked more about potential replacement characters than about Lysander himself
Latro with a horse, an artifact spear, a girl, a horse, and a hideous friend
Bert, who loves the circus as much as he loves stores