Hakkaku

is a cooking-nin from the 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, eventually 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.

Ninja Chef Arc
Hakkaku and his fellow cooking-nin kidnapped Teuchi's daughter Ayame to get the "Phantom" recipe and left a note to Teuchi, saying that he'll let Ayame go in exchange of the recipe, with the note was a picture of Ayame tied up.

On the day of the deadline, he and the three ninja met up at the area where they were to meet up with Teuchi. Hakkaku's concealed ninja prevented Teuchi from advancing to where Ayame's voice was heard from, with Hakkaku stating that he will see his daughter once the contest is done. Teuchi, with the help of Naruto Uzumaki, Chōji Akimichi and Sakura Haruno, had to compete against Hakkaku's cooks in a contest to see who can make the best Ramen. The three genin 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, who had gotten fat from Hakkaku's food.

Hakkaku