8 Kainin Kings
The 8 Kainin Kings are the 8 reincarnations of Orochi's 8 heads. They start off as humans, but are quickly overtaken by the specific emotion of the head they stemmed from. Once this happens, they are forced to band together and train their power, unlocking their Kainin forms, and eventually recombining into Orochi.
Areru appeared in Tokyo, removing his Oroki weapon from the ground, then turning into his Kainin form and rampaging. He eventually fought K' and FlamingoMask, only losing when he ran out of energy. He was then captured by Dan and used to find the other Orochis.
Areru is the reincarnation of the head of Rage. He possess immense strength and the ability to take a lot of damage. His only true weakness is his own stupidity, as his 15 year old human body cannot handle the amount of energy he puts out during battle. This causes him to pass out at inconvenient times.
Deception More to be revealed.