Jūgo's Clan

This clan is an unnamed family, which originated from an unknown area. The members of this clan possess the innate ability to absorb natural energy from their surroundings due to their unique bodies. However, the adverse effects of this energy results in sudden and uncontrollable surges of madness, causing them to sporadically go berserk. Their unique bodies also secrete special fluids that allow them to undergo various drastic physical alterations. 
The only known member is Jūgo, who voluntarily went to Orochimaru in the hopes that he could be cured of his fits of rage. According to Kabuto Yakushi, Orochimaru's subsequent investigations and experimentation allowed him to discover the origin of the clan's power at the Ryūchi Cave, where he obtained senjutsu power and, years later, Kabuto would learn Sage Mode.Naruto chapter 579, page 17
== References ==
es:Clan Jyugo
pt-br:Clã de Jūgo
fr:Clan de Jûgo
pl:Klan Jūgo