Ursula Appearances
Ursula was the central villain in the first movie of the new Disney renaissance, 1989's The Little Mermaid. There was an unnamed sea witch in the original Hans Christian Andersen novel from 1837, but she's not a prominent character, so the Disney character is essentially original.
Both Bea Arthur and Joan Collins turned down the role before Broadway's Elaine Stritch got the part, although she was fired over creative differences and replaced by Pat Caroll. Also, at least some credit needs to be paid to Divine, drag queen and star of several movies by cult director John Waters, as there's quite a bit of her in Ursula's design.
The Little Mermaid was also performed as a Broadway Musical from 2008 to 2009, where the role of Ursula was first played by Sherie Renee Scott...
...Then taken over by Heidi Blickenstaff...
...And finally by tony winner Faith Prince.
Ursula was the villain of the Disney Channel original movie Descendents 2 in 2017. She was voiced by Whoopie Goldberg.