Bloat is a porcupine pufferfish who appears in both Finding Nemo and Finding Dory as a main character and a minor character. The dentist purchased him from "Bob's Fish Mart." Bloat appears to be an ordinary fish until he becomes enraged. This irritable blowfish swells up into a spiky ball of wrath when he loses his calm. In Philip Sherman's workplace tank, there is a porcupine pufferfish named Bloat. He bloats up when he's terrified or upset, and one of the other fish needs to deflate him.