Yaokio was first introduced in the Duel Masters Victory season of the Duel Masters anime.
He is a local fish shop owner and he joined Daba and Mary Hanatin in a team for the local tournament. He faced Bucchake and got defeated by him. In the end his team lost as well.
He uses a Water Civilization deck.
Team Tensai Katta
Katta Kirifuda ● Bucyake ● Yohdel ● Benchan
Dragon Ryu ● Sakon ● Ukon
Onsen ● Rikishi ● Shachihoko
Sha ● Chi ● Hoko
Katsuzo Kirifuda ● Katsumaru ● Zubako
Duel Hero Yuu ● Duel Hero Atsuto
Mimi Tasogare ● Daba ● Yaokio ● Mary Hanatin
Hako ● Jimmy ● Kitarou ● Ken