Kosuke Masuo (増尾 興佑 Masuo Kosuke, born 15 June) is a Japanese voice actor from Aomori, having performed in Dragon Ball Z: Resurrection 'F' and World Trigger. He was the voice of Copen in Azure Striker Gunvolt, Azure Striker Gunvolt 2, and related media.
Apparently seeking other lines of work, he retired from voice acting, and Yuma Uchida was hired to voice Copen starting in Luminous Avenger iX.