Beast of Yang - Huodou first appeared from the previous Story Event (V3.9), Honkai Kingdom: Zero. Huodou also appeared as boss for the Story Event (V4.0), The Day You Vanished with the Stars. Now at V4.2, Beast of Yang - Huodou makes his way through Memorial Arena. So prepare all your (Pokeballs) Ice type Valkyries for a battle. Gonna defeat them all!