Benten

is a ninja who was helping Akaboshi to collect the Tsuchigumo clan's kinjutsu.

Appearance
Although he's a young man, Benten has a very feminine appearance, not unlike Haku or Nurari before him, even to the point where Chūshin quips that whenever Benten opens his mouth, it looks and sounds strange due to his masculine voice and feminine appearance.

Six-Tailed Beast arc
Akaboshi, Benten, Nangō, and Chūshin make for Mount Katsunagi in search of the Tsuchigumo clan's kinjutsu. They manage to destroy the barrier around the mountain and make their way up. They could not find the jutsu anywhere and ran into Tonbee, whom the group defeated quickly. They discover that Hotaru has the jutsu and they begin searching for her.

Trivia

 * is a shorter version of the name, the Japanese name for the goddess Saraswati. Benzaiten is a goddess of, among other things, eloquance, wealth, music, water, and the arts.