Hakaima Sadamitsu
English title: Sadamitsu the Destroyer
Japanese title: 破壊魔定光
Type: TV
Episodes: 10
Premiered: winter 2001
Source: Manga
Genres: Action, Sci-Fi
Studios: Studio Deen
Producers: Aniplex
Duration: 22 min per ep
Rating: R - 17+ (violence & profanity)

Sadamitsu, a high-school delinguents turned to a masked-hero, while not dealing with his rocky relationship with the strong female protagonist, he puts on a motorcycle-helmet-like mask and becomes a semi-robotic superhero who fights. He is assisted by other possibly- mechanical creatures in order to save the earth from the invasion of 20,000,000 escaped alien convicts.

(Source: AniDB)