Marina Del Rey voiced by Sally Field, is the antagonist of the prequel film. She is a mermaid and the governess of King Triton's seven daughters, in charge of enforcing Triton's distant and formal parenting style. She feels she has been stuck as the governess for too long, and her primary motivation is to take over Sebastian's job as the King's attaché. She temporarily succeeds after getting Sebastian, Flounder, and their secret music band sent to prison (as music was forbidden from Atlantica at the time), but upon learning of the gang's escape with Ariel, Marina resolves to kill them all by sending her electric eels after them. Marina is eventually caught, and Triton sends her to prison for her crimes.Benjamin is a light green manatee and Marina's sidekick. Unlike Marina, Benjamin is a softy who loves Ariel and her sisters, and wishes Marina would be nice. He is voiced by Jeff Bennett.