Ariel is the second Disney Princess to appear. Kilala comes in her world before the events of "The Little Mermaid".
Ariel is portrayed as being adventurous but stubborn. She continuously ditches her singing rehearsels to help Kilala find Rei. When asked about her father, Ariel insists that her father hates her; she later admits that she loves him, but only a little bit. She's also shown to be the best singer in the sea, and she helps Kilala defeat Ursula through song.
Before Kilala leaves, Ariel tells her that she inspired her to find her own true love. She then gives her an aquamarine.