I have gone through a multitude of nicknames. All swedish at the beginning, but now i'm called Clocky . I've been called Gilbert, Hell, The Devil, Jesus, Killer and many, many more. But now you can all call me either Leo (My middle name) or Clocky.
Geez, who would call you "Hell?" That's seems an unusual in so many ways. "Hey Hell, come over here."
Everypony (Lol see what I did thar) at my school calls me Sasuke, and my girlfriend calls me Sasu. Because, well... I look just like him. ._. Sir, I'm going to have to ask you to calm down. You're disturbing the other passengers.
My nicknames are/were usually based on screen names I've used: "G" (For Gevaudan, a roleplay character I had way back when) "Karl" (for Karl Kadaver, my online name for pretty much everything) "Eclipse" (based on a fanfic character I had way back when) and most recently, "Quill" or "Inkwell".