Vampire Regis (The Witcher saga)

Emiel Regis Rohellec Terzieff-Godefroy (known as Regis) was a higher vampire and a member of Geralt's hansa. He was well over 400 years old by the time of the books. Regis would later join the party after rescuing Geralt and Dandelion. Due to him being a vampire, Geralt was reluctant to let him join; however, the rest of the members had an easier time with it. Regis was fond of often telling others how wrong they were about their knowledge of vampires, and enjoyed having intellectual and cultural conversations with the other members of the group. Unlike other vampires, Regis did not drink blood despite his addiction to it when younger, and could withstand full daylight.