Oscar Derkx is a Canadian actor known for his voice work in English dubs of anime series. He is most prominently recognized for voicing the character Subaru Hoshiyomi in the English adaptation of the anime series Future Card Buddyfight Ace. In this series, Subaru Hoshiyomi is a central character known as the Ace of Studies, a top student who becomes a rival to the protagonist in the world of Buddyfighting.

Beyond this specific voice acting credit, Derkx's professional background is primarily rooted in theatre. He grew up in Nelson, British Columbia, where he was an active participant in local theatre from a young age, performing in numerous Capitol Theatre summer youth productions. He later pursued formal training at the University of Alberta, graduating from its theatre program in 2014. Following his graduation, he became a recognized up-and-coming stage actor in Edmonton, taking on a wide variety of roles in productions ranging from classic plays like A Christmas Carol, in which he played Young Scrooge, to contemporary works and musicals. This extensive background in live performance and character work has been a foundation for his career as a performer. His role as Subaru Hoshiyomi represents a notable foray into the field of anime voice acting.