Bill is Tad's father from Finding Nemo. He is a longnose butterflyfish.
He is voiced by Carlos Alazraqui.
Bill looks like his son Tad, however, he is larger.
Bill is never seen again until near the end of the film. He, Bob, and Ted laugh with Marlin about his joke and the other three are met by Bruce, Anchor, and Chum. He, Bob, Ted, and Marlin are seen waving their goodbyes when Nemo and the other children go on Mr. Ray during the drop-off.
- Bill at Pixar Wiki.