Real name: Adrian Fahrenheit Tepes. A dhampir born to the vampire Dracula and a human mother, Lisa. Since his father became the enemy of humanity, Alucard has fought to stop him. Having previously defeated Dracula alongside Trevor Belmont and others, he entered a long sleep of unknown duration to seal the cursed blood flowing through his veins. However, he awakens at the same moment Castlevania reappears. He has now entered the castle to uncover the secret of its resurrection. He is calm, composed, and cool-headed. While he may seem cold at first glance, he is far from heartless and cares deeply for his allies.

Dracula's right-hand man, often simply called "Death." He attempts to persuade Alucard to abandon his quest to defeat Dracula, but upon being refused, he strips Alucard of all his equipment and weapons, scattering them throughout Castlevania. After this initial encounter, he waits for Alucard in the depths of the Inverted Castle. If persuasion fails, he engages in combat. Even if defeated, he transforms to fight again. He possesses absolute loyalty to Dracula.

A descendant of the famous Belmont family of vampire hunters who previously defeated Dracula. However, he now stands before Alucard as an enemy. Initially, he summons monster subordinates to stall Alucard before vanishing. Later, he awaits in the throne room where he once fought Dracula. Shockingly, he is the one who resurrected Castlevania. His motive for plotting Dracula's return was his desire to fight forever; he believed that as long as Dracula existed, he could continue his life as a warrior. In reality, Richter is being controlled by someone else. He must not be killed—slaying him leads to a bad ending. If the one controlling him is defeated, Richter will return to his senses.

A dark priest who was previously defeated by Richter Belmont. Even after death, he remains as an evil spirit plotting Dracula's resurrection. He is the mastermind behind everything and the one controlling Richter. To restore Richter's sanity, the orb controlling him must be destroyed. Once broken, Richter returns to normal. Shaft then turns Castlevania into the Inverted Castle and waits for Alucard in its deepest reaches, performing the ritual to revive Dracula.

Alucard's father, who once loved a human woman named Lisa. He witnessed his beloved wife being executed during a human witch hunt. Consumed by intense rage and sorrow, he slaughtered every human present. From that moment on, Dracula became the enemy of mankind. He resurrects once every hundred years to bring terror to humanity. After Shaft is eliminated, Dracula is revived, beginning a long battle with his son, Alucard. Dracula will return again and again... until his final defeat in 1999. And then, in the year 2036, in Japan...