First!

Code name: Arsenal
Real name: Trent Warren
Power: To create just about any melee weapon (as long as it's at most modern-ish) from nothing
Gender: Male
Appearance:
Personality: Serious
Backstory: Trent used to be an ordinary child, having fun with friends and getting average grades at school. One day, however, that changed. As he was walking home from school, there was a mugger who tried to take his money. The mugger had a knife and was able to use it quite well. Trent tried to run, but in the end, it was futile, as Trent eventually hit a dead end. As a last resort, he fought back. As he threw a punch, the mugger simply jumped to one side, but was somehow cut with a knife that had appeared in Trent's hand. Trent took the mugger's confusion for an opportunity to stab his leg, hindering him as Trent ran off.
A few days later, a group of men appeared at Trent's house to "arrest" him. As they took Trent and drove off, it turned out that they were soldiers trained to fight and kill mutants. Trent tried to fight, and just as he was about to be overpowered, his other abilities kicked in and he was able to escape. He was forced to survive on his own, as he could no longer return home. He hid from "sentinels" and other threats, until he found a fellow mutant who was able to take him to the only safe place left for mutants. Sadly, the other mutant was killed in the process, forcing Trent to continue on his own, until he finally reached their destination.
Skills: Able to wield any weapon, somewhat enhanced speed and strength (not like superman or flash, but like a gorilla's strength and a cheetah's speed.)
Good or evil?: Good
Anything else?: Canadians are weird. -Ed, from Ed, Edd, n Eddy (XD)