ORIGINALLY PUBLISHED IN APRIL-1-2015

Breaker the Dolphin: The Little Mermaid
Delated Disney Character

Breaker the Dolphin was a character dropped from the Disney animated film The Little Mermaid. He was to be Ariel's companion and friend (with the voice of Robin Williams) but was replaced by Flounder and a lot of the lines written for Breaker were given to Ariel.

During Sebastian's rendition of "Under the Sea", the dolphin swimming around while Sebastian sang, "as off through the waves we roll, yeah", was supposedly a cameo appearance of Breaker.

Source: Disney Wiki

December-6-2019 Update: Updated and changed chapter with added information.