My first was Jet Flash, an Energy Blast / Energy Manipulation Blaster. He was essentially an homage to Iron Man, created many years before as a character for a Marvel Super Heroes RPG PnP game my big brother was running. That character's name was actually Skyranger, but when the time came to give him a name in CoH, I received the dreaded "Name not available" error message. Trying various spelling also resulted in a "sorry please try again", so I had to come up with something new.
At that very instant the radio was playing the song "Rocket" by Def Leppard. One line in the song's lyrics is "Jack Flash, Rocket Man", referring to songs performed by the Rolling Stones and Elton John. Well, at the time I had not actually seen the lyrics, and my brain misheard it as "Jet Flash, rocket man". And that, is the rest of the story.