I think almost every PC I've played in the past 20 years has had a personality. In the late 80's, I played an elf Fighter/Cleric/Magic-User who had no personality whatsoever, not even a name, but that's been about it. All my old PCs in a memo book I have stored away, I can look at each one, and recall a pretty firm personality I had specced out for each one. Even if I only played them two or three times before the campaign folded, I roleplayed them up a bit.