I can't remember much about the show, but I'm willing to re-brief myself if you think it's necessary. 

[b]Name:[/b] Masa Hayashida

[b]Alias:[/b] Black #2 (pronounced: Black Number Two)

[b]Age:[/b] 19 

[b]Personality:[/b] Masa is a temperamental young man with a short fuse who has little patience for authority. Though this is just his outer shell, those who win Masa over will find that he can be a very loyal and endearing friend.  

[b]Powers:[/b] Masa's powers channel through a guardian figure that follows him wherever he goes. This ghost appears at Masa's command, though Masa does not need to speak to summon it, and can be dismissed just as easily. This guardian has been dubbed "Locomotive Breath" by Masa, who stole the name an artist he likes. Locomotive Breath wields enormous strength and superhuman speed, making Masa a challenging foe in one on one combat, particularly against normal human beings. On top of his daunting skill in combat, Masa's guardian possesses the ability to amplify the damage of his punches with small explosions similar to those inside an engine.  

[b]Weakness:[/b] Masa isn't very smart, and can be baited into attacking at an inopportune time very easily. On top of this, he has no ranged potential, meaning that anyone faster than him can quickly escape in the time it takes Masa to get on his motorcycle. 

[b]Appearance:[/b] [url=https://mushion.files.wordpress.com/2009/07/yoyogirockabilly1.jpg]Masa[/url] and [url=http://img3.wikia.nocookie.net/__cb20121114195555/jjba/images/a/ab/TheHand_ASB.jpg]Locomotive Breath[/url]

[b]Bio:[/b] Masa has always been a violent child, constantly picking fights with other kids, neighbours, strangers, grandparents, you name it, there was no challenge too daunting for the young hooligan. However as the old saying goes, crime doesn't pay, and Masa was transferred to one of Japan's largest juvenile detention centres. Here Masa became immersed in a culture that finally accepted him. While the guar- err, teachers would often bully Masa for his dumb haircut, he found community among his classmates who shared his ideals and style. Though living in a small restricted area with thousands of hooligans and delinquents does have its dangers, and it wasn't long before he pissed off the wrong crowd. 

During one lunch break, Masa was tripped by a couple of kids belonging to the Black-Tiger-Leopard-Dragon-Fire Club, a relatively small gang who were dangerous all the same. Responding with a flare of anger, Masa charged the entire table of hooligans, pinning one to the floor before being pulled of and ganged up upon. Masa's tenuous relationship with the staff gave them little reason to help, and so the entire cafeteria turned a blind eye to his beating, every last one of them left the poor boy to his fate. Though as a final blow was about to be struck against his head, all went white. When Masa's vision returned, the crowd had dispersed, the floor was charred, and one kid was on fire. The staff finally rushed to break up the ruckus, but left Masa to ponder on what had happened. According to some, Masa's final punch had "exploded", a rumour he needed to investigate himself. That night, in his small dorm, Masa saddled up to his punching bag and threw a quick hook. Another flash of light, but when his vision returned this time, before him stood a metallic humanoid who floated just inches above the floor. The being mimicked Masa's movements, and seemed entirely in his control. In a test of his new "magical" skill, he commanded the being to unload a quick string of punches against the wall of his dorm. Sure enough, explosions ensued, and after half a minute the wall ceased to exist, Masa was free.

That was two years ago. Today Masa roams the US on a motorcycle, destined to use his power to prove his badassness to anyone he meets. 

[b]Arc Ideas:[/b] Masa learns the power of love.

[b]Other:[/b] "Titans Forever", don't know why I forgot that initially.