oh man, i wish i could play with you :/ PnP D&D is so much fun...but anyway:
serious names: Arthur (nicknamed Arthie), Ashetaka, Fionn, (pronounced fin like the impliment of a fish, but its an irish legendary warriors name)
Joke name: TROGDOOOORRRRRRRR! (im sure someones said that already though ) and Mister Hot Pants, no i dont want these two added to the list, i just felt like saying them.