Hatchan followed the map that he was given by the Macro Pirates to find the secret takoyaki recipe. He followed the map and found Mash. After a short fight, Mash was easily defeated, and Hatchan ran to save Camie, angered since he thought the pirates lied to him.
After Hatchan beat Macro and his crew, he learned that there was a secret compartment in Mash's hat. He returned and opened Mash's compartment, revealing the recipe and special takoyaki sauce. Hatchan proceeded to take the defeated octopus and the sauce to make takoyaki for his crush, Octopako.
Hatchan was later seen cooking the takoyaki for the citizens of Headband Catfish Village instead of Octopako. It is unknown what happened to Mash afterwards.