Akaboshi

is ninja who aims the learn the Tsuchigumo clan's forbidden jutsu. He appears to be the leader of his group.

Six-Tailed Beast arc
Akaboshi and his group head to Mount Katsunagi to seach for the Tsuchigumo clan's forbidden jutsu. He was able to destroy the barrier within the mountain with the help of his group. They ran into Tonbee, whom Akaboshi and his group defeated quickly. Akaboshi and the others discover that Hotaru has the jutsu and begin searching for her.

Later, Akaboshi and his comrades are seen receiving new orders from an mysterious man. After meeting with their leader, the four-man team encountered Utakata, who single-handedly bested the group until they caught him in their Destructive Barrier Formation technique.

After this, the group headed to the Tsuchigumo Village, where they ambushed Hotaru with the help of the villagers in the hopes of getting the forbidden jutsu. However, the scroll that Nangō hands him turns out to be a rigged trap, which explodes, allowing Hotaru to escape. Akaboshi and his team pursue Hotaru, and, just after catching her, are interrupted by Utakata, who claims to have business of his own with Hotaru.

After Utakata escaped with Hotaru, Akaboshi and his squad were confronted by their leader, who showed them that Utakata was a Missing-nin from Kirigakure with a bounty of 50 million ryō. Akaboshi asked their leader what they should do, to which he began to muse about.

Trivia

 * means red star. A poetic nickname for the star Antares.