Orem Rivendorn: Eladrin Wizard
Randus DuThane: Human Artificer
Halston "Torq" Thorqleston: Half-(er, three-quarter-)orc Fighter.
Smith: Longtooth Shifter Sorcerer
Ket Huzzard: Half-elf Warlock
Trelle: Elf Ranger
Other Half characters (not sure about the spelling on most of these):
Arbalest: Warforged Warlock with a funny hat and mustache to flavor him as a cog
Fireleth: Elf fighter
Endelold: Elf ranger
Sir Phillipus Of the Grange: Human Warlord
Other Third characters:
Glaa: Watersoul Genasi Druid, with funny hat and mustache.
Brenzen: Half-elf Paladin
Seven Owls Wise: Human Monk
Eofel Il-Rhamani: Eladrin Avenger
Albrecht Ghostbeard: Dwarf Cleric
Wait, why are there five? Something isn't right here.....
Also technically played by a player for one game: Coil: Warforged Ranger. Spoiler's character when spoiler spoiler spoiler on the moon.
Anyway, there may or may not be one or two other player characters from when Randus got all wibbly-wobbly with his timey-wimey, but I feel bad enough pulling all that from memory anyway, so I'll stop there.