Adrian Fahrenheit Ţepeş, usually refered to as Alucard is a character in the Castlevania series introduced in Castlevania III: Dracula's Curse where he is established as a supportive character before becoming a protagonist in later games. Alucard is a dhampir, born from a vampire Dracula, and a human, Lisa.
Super Smash Bros. series
Super Smash Bros. Ultimate
In Super Smash Bros. Ultimate, Alucard is mainly featured as an Assist Trophy that uses the Crissaegrim, one of his swords from Mirror of Fate and Symphony of the Night, as his main mean of attack. Alucard can also turn into mist to avoid attacks or into bats to deal damage while moving. He also retains the clasic Castlevania main character melee attacks to damage oponents that gets near him. Alucard can be KOed by taking enough hits. Alucard is also featured in Palutena's Guidance for Richter Belmont where Palutena introduce him to Pit. Alucard also appears as a Legendary Shield type Spirit with 3 open slots that boost sword attacks when equiped.