Gyūki


 * Name:
 * Creature Type: Unknown; appears to be a cephalopod
 * Host: An unknown Cloud-nin
 * Unique Traits: Unknown
 * Status: Active, sealed in host

The Eight-Tailed Beast is currently one of the two remaining Tailed Beasts that was not extracted by Akatsuki, while the other one being the Nine-Tailed Demon Fox. Due to Akatsuki's depleted numbers, Madara Uchiha ordered Team Hawk to capture the Eight-Tailed Beast. The Jinchūriki is a musclebound Cloud shinobi who appears to dislike light. He also carries seven swords,and has dark skin,two traits unique to that of the known Naruto world. On his right shoulder, he has a tattoo that says "iron"; and on his left cheek, he has a tattoo of a bull's horn.

Speculation
As most of the other Tailed Beasts are based upon mythological creatures, it is speculated that the Tailed Beast is based upon the eight-headed and eight-tailed dragon, Yamata no Orochi. But from the shadow when Sasuke goes to retrieve the beast, it seems to be an octopus.