Kotomi Ryuguden is a name associated with a voice acting credit in the 1995 anime OVA series Dragon Rider. In this production, Kotomi Ryuguden provided the voice for the character Karis. This specific role appears to be the primary credit linked to this name.

Available information indicates that Kotomi Ryuguden is a pseudonym used by the established and renowned Japanese voice actress Ikue Otani. The name was used specifically for her work in Dragon Rider.

Ikue Otani, born on August 18, 1965, in Tokyo, has had an extensive and highly successful career in the anime industry, affiliated with the talent agency Mausu Promotion. She is widely recognized for her distinctive, high-pitched vocal performances, often playing young boys, mascot characters, and cute creatures. Her most iconic and long-running role is as Pikachu in the global phenomenon Pokémon franchise. Other major and enduring roles include Tony Tony Chopper in One Piece, Mitsuhiko Tsuburaya in Case Closed, and Konohamaru Sarutobi in Naruto. Her filmography is vast, spanning numerous anime television series, films, and OVAs from the early 1990s to the present day, demonstrating recurring collaborations with major franchises and production studios.