Super OVA 1: Based on a story from vol. 27 of the manga, Shampoo and Ukyo arrange to travel to a cave that is legendary for breaking up couples. They hope they will cause Ranma and Akane to break-up and Shampoo hopes to ditch Mousse the same way.
Super OVA 2: "Jaaku no Oni" (lit. "The Wicked Demon") was released in 1995. Based on a story from vol. 29 of the manga, an Oni (that wears a tiger-striped diaper just like the Oni of Urusei Yatsura) escapes it`s sealed box and begins to possess people in the neighborhood.
Super OVA 3: This is a story from vol. 31. Ranma disturbs a doll that takes revenge on anyone that shows it disrespect. In order to teach Ranma a lesson, the doll possesses Akane and tries on many occasions to attack him.
(Source: AniDB)+ More
Characters & Voice Actors

Saotome, Ranma
Main
Hayashibara, Megumi
Japanese
Tendou, Akane
Main
Hidaka, Noriko
Japanese
Cologne
Supporting
Hibiki, Ryouga
Supporting
Yamadera, Kouichi
Japanese
Kuno, Tatewaki
Supporting
Suzuoki, Hirotaka
Japanese
Kuno, Kodachi
Supporting
Shimazu, Saeko
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