|Japanese Name||Namazudon, ナマズドン|
|Family||Kit Fish (daughter)|
|First Appearance||Densetsu no Stafy|
|Latest Appearance||The Legendary Starfy|
Fat Cat is a large cat fish dressed like a sumo wrestler who enjoys wrestling and going to hot springs with his daughter Kit Fish. His first appearance is Densetsu no Stafy. His Japanese name is Namazudon. You can fight with him in a wrestling match in The Legendary Starfy.