Alucard made his debut in Castlevania III: Dracula’s Curse, where he is Trevor Belmont’s sidekick and Dracula’s son. He became a playable character in Castlevania: Symphony of the Night, which solidified his place in the series and influenced the Metroidvania/search-action game genre. However, in Super Smash Bros. Ultimate, Alucard is an assist trophy and not a playable character.
