Bullyland Disney Prince Eric. Ariel is a mermaid, seventh born to King Triton, ruler of Atlantica. Her best friend is Flounder. Sebastian, her father’s adviser is assigned to keep an eye on her. Ariel is kind to everyone. Ursula puts a spell on King Triton and the Merfolk which is broken when Prince Eric kills Ursula by ramming a derelict ship’s splintered prow through her. King Triton uses his magic to transform her into Princess Ariel. Princess Ariel then leaves the sea to marry Prince Eric.