Lightening
the puma
the claws
Slash
spike
sting
pow pow
THE DECAPITATOR
http://images.wikia.com/uncyclopedia/ima...
Lights out
HMM the amount of time I would spend on the floor I would have to choose The Carpet.
FullMetal
Dream smasher
THE MASTER OF DISASTER
sharpshooter
I would go with "SMASH"
Boom Boom
I know most boxers don't choose they're nickname, but if you could, what would yours be?
My first name is Stephen so I think 'The Scorpion' would be really good, I know Sakio Bika already uses that but a lot of boxing nicknames are reused at some point or another; Sugar Ray Robinson, Sugar Ray Seales, Sugar Ray Leonard, Sugar Shane Mosley etc
The Headhunter is another good one, a Papa New Guinea kickboxer called Stanley Nandex has this nickname but he's retired now and is from a different sport so that wouldn't matter.
Other nickname's I like...
The Panther
The Assassin
Mr Pay-per-view
The Tartan Terror (I'm Scottish)
The Mortar
Bang Bang
Just a bit of fun guys :)