"The Little Mermaid" supervising animators included Glen Keane and Mark Henn on Ariel, Duncan Marjoribanks on Sebastian, Andreas Deja on King Triton, and Ruben Aquino on Ursula. Originally, Keane had been asked to work on Ursula, as he had established a reputation for drawing large, powerful figures, such as the bear in "The Fox and the Hound" (1981) and Professor Ratigan in "The Great Mouse Detective" (1986). Keane, however, was assigned as one of the two lead artists on the petite Ariel and oversaw the "Part of Your World" musical number. He jokingly stated that his wife looks exactly like Ariel "without the fins." The character's body type and personality were based upon that of Alyssa Milano, then starring on TV's "Who's the Boss?" and the effect of her hair underwater was based on both footage of Sally Ride when she was in space, and scenes of Stoner in a pool for guidance in animating Ariel's swimming.