Ok, I think I've got something this time.
Name: Leon (short for Leonardo, named after the artist himself)
Alias: The Silver Gun-Mage
Age: Early to mid-twenties
Gender: Male
Species: Human/Gun-Mage
Height: Same as Dante
Eyes: Blue
Hair: Short blonde
Physique: Slim athletic build
Occupatin: Devil Hunter
Weapon: Silverbolts - dual black and silver automatic handguns modeled somewhat after the derringer, except these are the same size as Dante's guns.
Skills/Abilities: Peak physical conditioning, master marksman, expert in all forms of combat (melee, mid-range, and outer-range), and also a powerful mage who can charge his guns with powerful elemental energy (mostly light-charged) attacks that could kill some powerful devils with a single shot. As a mage, Leon can also heal himself and others.
Personality: Dante's opposite in terms of attitude at times. He's a more polite and sociable person, but shares Dante's love and fierceness when it comes to fighting devils. Leon is also shy, but has better luck with women much to Dante's annoyance.
Background: The descendant of the Silver Gun-Mage who had teamed up with Sparda to fight a powerful devil king. As a child, Leon was forced to watch while hiding as a minion of that same devil king murdered his parents. Before it could attack Leon, his grandfather killed the demon with the Silverbolts and hid Leon away. Fearing that the devil king would soon return, Leon was trained to become the next Silver Gun-Mage.
An older and stronger Leon would leave on his own after his grandfather passed on, traveling the world as he hunted devils while also taking on small jobs for some cash when devil hunting didn't pay as good.
Other: Leon loves to draw and paint.
I'll work out the clothing later.