From Bulbapedia, the community-driven Pokémon encyclopedia.
Oriba is a is a one-time character in the Pokémon anime who appeared in the
episode The Ole' Berate and Switch!
Not much is known about Oriba as he only appeared in the episode briefly. What is known however, is that he owns a Marowak which knows powerful Bone Club and Bonemerang attacks. However, he was defeated in battle by Ash's Corphish.