요피, 두엽 (Yeop Du), Doo Yeop, 요피랜드 국왕 (King of Yopi Land), 요피랜드의 영주 (Lord of Yopi Land), 동부연합극의 수장 (Leader of the Eastern Alliance)
DooYeop known as Yopi in Lucid Adventure is the King of Yopi Land and the leader of The Eastern Alliance. Along with Akira he is a winner of a previous iteration of The Combat Tournament. Source: Hardcore Leveling Warrior wiki