Urthona was introduced during the 2014 Kappa and the Lost Utopia event alongside Albion and the three other Zoa. He can be fused by players with the Zoas plugin through a special double fusion of Sudama and Erthys. Like Albion and the others, he possesses a feature called Milton, which gives him 100% elemental resistance according to which Zoa are in the party. After mitama fusion, he gains another feature called Bunrei (分霊, lit. Divided Spirit) which increases his elemental damage by 50% according to which Zoa are in the party.