Hamilton Fox, a con man and drug dealer, had dreamed of becoming an Olympic runner for as long as he could remember. Sadly, he was willing to do anything to be the best and was caught using performance enhancing drugs and banned from competing any further.
Blaming everyone but himself he fell in with the wrong crowd and began dealing drugs before being caught and doing time in the Holloway Detention Center on the outskirts of Opal City. It was there that he met Joseph Klein who took him under his wing. When Klein was released he told Fox to look him up for a job when he got out.
Hamilton did just that 18 months later when he found Klein working for the crime syndicate known as the One-Thousand and serving as a trusted right hand for the Mist who was in charge of operations in Opal City. Two years later, after proving himself loyal and reliable, the Mist asked Fox if he would be interested in an experiment that could give him superpowers and without a moment's hesitation he told her he was in.
The 1,000 had put a member of the Dominator species known as Gunther in touch with a new iteration of H.I.V.E.. Gunther had defected to Earth during its Invasion by a coalition of aliens. The Dominator's research involved unlocking the metagene and he and two other subjects underwent the procedure.
Hamilton was really lucky. He only had flu-like symptoms for a couple of days before his super speed manifested while the other two subjects died very, very painful deaths.
The Mist has been training Fox in the use of his powers and he has taken up the codename the Crime Wave. She's been having him operate in Hub City to save him as secret weapon when the time is right. Fox is running faster than ever and is enjoying the rush.
You can download a PDF for Crime Wave here.
I used the excellent Savaged.us to build him at Power Level II.