I usually name my main character Lethorian which was the first name I came up with when I walked off the boat into Morrowind and thus has been my favorite character name ever since. My second character name is Domino, which was the name of a pirate in the game Beyond the Beyond for PS1 which was one of my first RPGs. My tertiary name is Trebor, which is my name backwards and kinda the Anti-Me. After that I usually use names of friends, usually my best friend or a close female friend if the character is female, or come up with something off of the top of my head. Other than that I've never had any rhyme or reason.