Orzsebet was a Nephalem who swore allegiance to Sargoth.
Biography
Orzsebet was loyal to Sargoth. He was Sargoth's lieutenant in his campaign to offer Valostre to the Burning Hells. After his master was sealed within the temple he was killed and sealed by Alunthe.
By 1270, Orzsebet, reborn as an undead escaped his seal. In a bid to secure passage off the island, he sent his horde of undead to attack the nearby port through a portal. After they failed he went to personally destroy any opposition the defenders may have put up. Alunthe (now preserved as a Temple Guardian) appeared to stop him but was overpowered. With victory in sight the only obstacle remaining was a lone adventurer/group of adventurers. They were able to stop Orzsebet from overtaking the town and killed him.[1]
In-game
Orzsebet is a super unique skeletal Mage seen in Diablo Immortal. He is the boss of the side quest "The Leftovers".