Baoh Raihousha
English title: Baoh the Visitor
Japanese title: バオー来訪者
Alternative titles: Baoh, Baoh Caller
Type: OVA
Source: Manga
Episodes: 1
Status: Finished Airing
Aired: Sep 16, 1989
Duration: 46 min
Rating: R - 17+ (violence & profanity)
Studios: Pierrot
Producers: TOHO, Shueisha
Licensors: AnimEigo
Genres: Action, Sci-Fi
Themes: Gore, Martial Arts, Super Power
Demographics: Shounen

An innocent young man, Ikuroo, has a parasite known as Baoh implanted in his brain by an evil organization, Doress. The parasite makes him nearly immortal and gives him the ability to transform into a really powerful beastie when he's in trouble. 

Doress intends to use him in some sort of ploy for financial success, world domination, or something along those lines, but when they're transporting him on a train, a young psychic girl, Sumire (who's being held by the organization due to her abilities), sets him free and the two escape together. 

Of course, Dr. Kasuminome is the mad scientist behind the whole Baoh thing, and he isn't about to let his test subject get away and he has considerable resources (including some superpowered lackeys, as well as a small army) at his disposal.

(Source: AnimeDB)