I actually have a funny story about this...
Okay, so my main character's name is always Farasha. I love that name, I use it for everything. Well, when I used to role-play, my character's name was always Farasha and her rival/brother/partner whatever was always named Cyrus. You can see where this one is going.
About halfway through the game when the real Cyrus showed up, I got all excited because I thought they did some kind of neat time-travel thing where your rival eventually becomes this bigshot villain trying to take over the world and then travels back in time... then I realized it was just a coincidence and I had really named my rival after the bad guy without even knowing it.
Fun times. XD