The Evil Manta
S1, E9: Ariel accidentally frees a dark figure known as the Evil Manta, who tries to take over Atlantica using deception and lies to turn its merfolk people against each other.
S1, E9: Ariel accidentally frees a dark figure known as the Evil Manta, who tries to take over Atlantica using deception and lies to turn its merfolk people against each other.