ORIGINALLY PUBLISHED IN JANUARY-5-2015

Kathy: Nemo
Forgotten Pixar Character

Kathy is a minor character in Finding Nemo. She is a student of Mr. Ray resembling a blue and green spotted fish with prominent buck teeth. She has only one dialogue in the film. Kathy appears to be a triggerfish of some sort.

"OH MY GOSH, NEMO SWIMMING OUT TO SEA!"

In the Art of Animation Resort in Walt Disney World, in the Nemo part, you'll see her next to one of the pools.

Update: the original tittle was called "The Blue Proclaimer Classmate Fish" because I didn't know her name till now.

Update:(March 18-2016)  Kathy is no longer a forgotten character.

Source: Finding Nemo wiki

November-26-2019 Update: Updated and changed chapter with added information.