He is a purple fish who wears black glasses, brown pants with a black belt, a green shirt with an orange and dark orange scarf around his neck, and a brown hat with a red bow on the hat.
Role in episode
He tells Mr. Krabs that the art that Squidward made will not be worth a penny, but it would be much more valuable if he was out of the picture. He is about to buy the art while Squidward is in Mars, with Mr. Krabs telling him that Squidward is really gone for good, when a UFO drops Squidward off and flies away. When the art appraiser finds out that Squidward is not gone, he rips the $150,000 tag.
Later, when Squidward destroys some of his paintings with a power saw, he tells him that is true art, and Mr. Krabs joins in and they destroy the Krusty Krab. The art appraiser tells Mr. Krabs that he is not paying him anything, as performance art is about the moment, and he cannot put a price on it.
When a piece of the roof falls on Mr. Krabs and Squidward, the art appraiser is amazed by it and puts it up at the Art Museum, and tells some fish how he acquired that masterpiece.
The art appraiser loves art and pays people who have good art, and puts the good art up at the Art Museum. However, if someone has bad art, he will not buy it, but he will if the artist is out of the picture. He also likes seeing bad art getting destroyed, but will not pay for performance art, as it is about the moment.