Yahiko was a Shinobi of Amegakure and also the founder of Akatsuki. His corpse also became a vessel that worked under Nagato's command as the Deva Path of the Six Paths of Pain.
Yahiko had Spiky-Orange Hair, and Brown Eyes. While he was with Jiraiya, he wore a Black Robe with Green Trimming, and a black and white belt was tied around the Robe with a Mesh-Armor under the robe. he also had a pouch to hold his Supplies.