The mysterious maskman of the show. And in case you haven't noticed, a ninja as well. Although a pretty goofy looking one at that what with all those bright colors. I do love the trenchcoat though. Its very . . . German.
Schwarz specializes on poppin' out at the most unexpected places, at the most unexpected time, and at the most unexpected manner. He also spends most of his time teaching Domon stuff in the most grating manner like mocking him or laughing at him, which of course drives Domon close to murder. He means well of course and often than not finds himself saving Domon and his company's hides.
As for his place in the whole set-up, Schwarz seems to know more about the Devil Gundam. Both Domon and Rain even admits to feeling some sorta dejavu upon hearing his voice. Hmmm. . . In addition, his name translates as "Big Brother" in German. All of which should give you a hint as to who he is. The only problem is the how and the why.
As for his fighting ability, Schwarz is one of the characters in the show that is so fun to watch fight what with all the ninja tricks from turning invisible, changing forms, and even phasing into walls. When I first saw his final move, the one where he spins like a top, I couldn't help but choke. I can feel my eyebrows going up. This really is the limit. One of the coolest characters if not the coolest.