Ariel is a mermaid who is drawn to the surface world above her underwater home, despite the dangers that has her father cousinly keeping her away from it. From time to time Ariel collects items that have fallen into the sea one way or another, and shortly after she falls in love with the human prince she saved Ariel's desire to be with Eric in his world had gotten her to make a deal with a sea witch. So she can become a human like him.
She makes Disney cameo appearances in Ralph Breaks the Internet, that is a netizen version of her, Sofia the First, and Descendants 2.
In the Kingdom Hearts series Ariel serves as battle-partner characters in the very first game and Kingdom Hearts: Chain of Memories, when Sora visits her underwater home world, along with her being one of the Disney summon characters in Kingdom Hearts III.
In the Broadway Musical version of Disney's The Little Mermaid, the sea witch Ursula is featured as Ariel's evil aunt.
This makes Ariel the first Disney Princess to have an aunt, even though it is in an altered/retold version of her Disney film.
Auli'i Cravalho portrays Ariel in the live television special of Disney's The Little Mermaid Live.