Hakkaku

is a cooking-nin from Land of Lightning.

Background
He went to the same cooking academy as Teuchi.

Many years after attending the academy, Hakkaku had become a succesful cooking-nin. His food made everyone who ate it keep on eating it, making them fat. However, he became jealous of Teuchi, who had a fabled "Phantom" Recipe, which was highly acclaimed. He visited Teuchi and wanted to know the recipe only to be denied. He and his fellow cooking-nin kidnapped Teuchi's daughter Ayame to get the "Phantom" recipe and left a note and a picture of Ayame telling him that he'll let Ayame go in exchange for the "Phantom" Recipe which Teuchi found the next morning. This causes Teuchi to ask Naruto Uzumaki, Sakura Haruno, and Chōji Akimichi to help him.

Ninja Chef Arc
On the day of the deadline, he and the three ninjas met up at the area where they were to meet up with Hakkaku. Hakkaku's concealed ninja prevented Teuchi from advancing to where Ayame's voice was heard with Hakkaku stating that he will see his daughter once the contest is done. Teuchi, Naruto, Sakura, and Chōji had to compete against Hakkaku's cooks in a contest to see who can make the better Ramen. Chōji and Naruto eventually aided Teuchi in crafting the perfect bowl of ramen. In reality, the "Phantom" recipe didn't exist. It was just the disposal of the broth's bitter taste. As a result, Hakkaku let Ayame go where Teuchi discovered that the food that Hakkaku's cooking-nin made for her made Ayame fat.