Mr. Puff was Mrs. Puff's husband. He unfortunately was turned into a light cover. The only picture of him was in Krusty Love where it he is shown getting turned on using a switch. In Shell City in The SpongeBob SquarePants Movie, there is another fish that looks like Mr. Puff that may be him - he could have walked into Shell City and been turned into a lamp. Mr. Krabs asked Spongebob, "But what happened to Mr. Puff?" Spongebob answered, "She doesn't like to talk about it."