In my latest long running campaign I wound up referring to the party more by titles than by names, because I am terrible at names.
There was:
Tryndalore, better known as the Prince. Exiled prince, eventually lead an assassination attempt and coup, with army of demons.
Rabadan, The Hedge Wizard. Later the Lich. Was a hedge wizard, died in the second session to a lowest class demon, sold his soul to a middle manager imp to come back to life. Eventually learned the ritual to Lichdom, became the second lich in the entire setting, started turning everyone who wanted into psuedo-liches. Fed their souls to his master, Grinnok.
Darius, the Soldier. A battlemage turned bureaucrat, wound up sacrificing himself at a key point to allow the coup, was loyal to the Prince.
D-something. Used his name the least. The Bandit King/The Dragon. Was a normal bandit, at the very start of the campaign through single combat and sheer force of charisma took control of a bandit stronghold, converted it into a private military, kept the name of Bandit Camp. Later fused himself with a dragon via a deal with a demon king, to become the first and only half dragon in the setting.
Spider. A giant tarantula from a race of Giant Intelligent Friendly Talking Spiders. Was one of the scariest combatants, was giving a suit of special made chainmail, became indomitable tank. Spoke with a high pitched voice, thought most people were cute. Was later replaced by Spider Spiderson, Spider's daughter.
Nothing. Skilled agent, ran a spy network that eventually just became ridiculous. After most of the campaign refusing to make any deals with demons unlike the rest of the party, sold his legacy to save his wife.
It is very important to note that this was not an evil campaign. In fact, my stated goals for this campaign were for heroic adventures.