Makaro Akimichi

Makaro Akimichi is a chuunin of Konohagakure's Akimichi clan.

Manga debut: Naruto Chapter #631
Anime debut: Naruto Shippuuden Episode #372

Makaro is mentioned to have only been promoted to chuunin before the war. Although the full extent of his abilities are unknown, as an Akimichi, Makaro can convert calories into chakra in order to perform his clan's secret techniques.

(Source: Narutopedia)