what is sebastian from little mermaid

Sebastian is a character from Disneys 1989 animated feature film "The Little Mermaid". He is a red, Jamaican-accented crab who serves as King Triton's court composer and is voiced by Samuel E. Wright. Sebastian's full name is Horatio Thelonious Ignacious Crustaceous Sebastian. In the film, Sebastian is one of the main protagonists and is a friend and advisor to Ariel, the film's protagonist. He is known for his musical numbers, including the popular song "Under the Sea".