Ursus (also known as the Sea Sorcerer) is the main antagonist of Warner Bros. Pictures/Imagine Entertainment/Don Bluth's 1998 animated feature film The Young Merman. After being banished from Atlanticus by his longstanding rival, Queen Tethys, a scorned Ursus vowed to exact vengeance by harnessing the power of queen's trident and installing himself as ruler of all the ocean. To accomplish his goals, Ursus strikes deals with improvement merfolk that will (supposedly) make their dreams come true, but are covertly designed to advance Ursus' own ambitions. Prince Aaron, being one such merfolk, trades his voice to Ursus in exchange for human legs. Should Aaron fail to uphold him end of the deal by winning the love of Princess Emily, he will be bound to Ursus, and thusly used as a bargaining chip for Tethys' crown.
