Certainly not Mingus!
I'd have to say that my favorite character right now is T.R. Monroe, gunslinger. He started out in a short-lived New West game with a group that had a couple of gunslingers, a psi-slinger, and a preacher. He and one of the other slingers (Bennie LeSage) knew each other from back in the day and they all ended up reconvening to try and find a cure for their mentor who turns out was the genetic stock from which each of them was cloned.
Long story short, the original game ended abruptly. However, Monroe was recently incorporated into a Rifts game taking place in the Vampire Kingdoms. He's much older in this new adventure - and by gunslinger standards, ancient. It's about 25 years after the original gunslinger game and Monroe is about 57 years old. He's now a veteran vampire slayer and still as ornery and conflicted about his calling (i.e., killin'). But he's efficient and has great one-liners.
Fun to play for sure.