Daemon Inferna is normally the final boss of Hallowteens, after defeated Solidus Wiseman that he uses his magic to resurrect Daemon to face the player. In the Legacy of Chris Thorndyke, he was somehow resurrected, but had no choice, just like his father to join Samuel Townsend to destroy the omniverse under Tokoyami's claws.
And he is voiced by Brandon Potter in the English dub and he will be voiced by Kazuya Nakai in the Japanese dub.