Gauser is a playable character from Heroes of Mana as well as an antagonist in Seiken Densetsu 3.
Heroes of Mana
Gauser is the current king of Ferrolia, he joins Roget and his team after they help him and the surviving beastmen to escape to Wendel after an attack by Pedda.
Seiken Densetsu 3
Gauser plays the role of an antagonist this time, though his motivations are not completely evil. He is the father of Kevin and plays a dominant role in his and Charlotte's story arch. Of the "three evils" in the game, he is part of the Masked Mage's faction.