Baoh (バオー来訪者, Baō Raihōsha, lit. "Baoh: The Visitor") is a Japanese manga series written and illustrated by Hirohiko Araki, most famous for his epic JoJo's Bizarre Adventure. Originally serialized in Weekly Shōnen Jump from 1984 to 1985, it was later compiled into two tankōbon volumes. The series was adapted into a single-episode original video animation (OVA) by Studio Pierrot in 1989.
The manga was licensed in English and released in monthly chapters by Viz Media in 1990, sales were pitiful and it wasn't until 1995 that they released it in tankōbon format. The OVA was licensed for an English DVD release by AnimEigo in 2000, it was delayed, finally being released in 2002.
Baoh was Araki's first series to display his signature amount of over-the-top gore. The characters Dio and Neo Dio from the video game series World Heroes are based on Baoh, bearing not only a strikingly similar appearance, but also have similar attacks in which they use in their various appearances in the World Heroes series, and Neo Geo Battle Coliseum
Teenager Ikuro Hashizawa is kidnapped and turned into a Baoh, a bioweapon with super human strength and other abilities such as firing a corrosive substance, by the Doress Laboratory. He escapes with the help of Sumire, a 10-year-old psychic girl. Professor Kasuminome, head scientist at Doress, sends various assassins and monsters to try and kill Ikuro, in means of stopping the Baoh virus from spreading and infecting the world