Atsui (アツイ, Atsui) is a shinobi from Kumogakure.
Atsui has a somewhat dark blond hair color and wears his hair in an asymmetrical bowl cut fashion. He has green eyes and wears a sleeveless derivation of the standard Kumogakure uniform and the respective villages' flak jacket. Tattooed on his left shoulder is the kanji for "heat" (熱,netsu). Also, he wears bandages on his forearms and shin guards.
In stark contrast to his sister Samui, Atsui has a rather hot-headed and spirited attitude
- "Atsui" (熱い) means "hot" in Japanese (in reference to temperature), in contrast to Samui's name which means "cold".