Whale

The Whale is a character from Disney/Pixar's 2003 film Finding Nemo.

Personality
This whale is the largest character in the film. Upon leaving the EAC, Marlin and Dory get trapped inside the mouth of a blue whale after swimming into its path. The whale carries them to Sydney Harbour, where Marlin reluctantly trusts Dory, who tries to speak whale, and allows himself to be ejected from the whale's blowhole at the risk of being eaten.

Finding Nemo
In Finding Nemo, the whale was first seen when he revealed how big and was from a distance and Dory started speaking whale to try and ask him if he can help them find Nemo, but the whale ends up swimming away, but then swims up behind Marlin and Dory (also scaring some krill, who tell the two fish to swim away), and then the whale eats Marlin and Dory. Some time after, as Marlin is deseperating, Dory tries to talk to the whale. In reaction, the whale ejects them by his blowhole, at a location which happens to be Sydney. The whale supposedly understood Dory and helped them to get to their destination.

World of Color
The whale appears in the show's version of the sequence of Dory speaking Whale and is the lead-in to the Pines of Rome sequence.