Gold and Silver Brothers

Kinkaku and Ginkaku, known together as the Gold and Silver Brothers or the Two Lights, were infamous shinobi out of Kumogakure who traced a faint bloodline back to the Sage of Six Paths. Before the First Shinobi World War they tried to seize the Nine-Tailed Fox for their village and were swallowed whole for their trouble. The pair stayed alive within Kurama for two weeks by feeding on the beast's flesh, until it spat them back out. That ordeal left them with enormous chakra reserves and powers resembling those of a jinchuriki.

Armed with their new strength, the brothers turned on the Second Raikage during his peace talks with the Second Hokage, Tobirama Senju, in a bid to stage a coup. They pushed both leaders to the brink of death, an act that branded them traitors, yet Kumogakure still prized their raw skill. They lived on into the era of the Third Raikage and eventually died, carrying off four of the five legendary treasures with them.

During the Fourth Shinobi World War, Kabuto Yakushi reanimated the pair, and their mere reappearance nearly drove A to abandon his command of the Allied Shinobi Forces to face them himself. The brothers ambushed Darui of the First Division along with Samui and Atsui, sealing the siblings inside the Benihisago even as Darui tried to save them. Darui countered by trapping Ginkaku in the same gourd using the Shichiseiken, which drove an enraged Kinkaku into his six-tailed Version 2 form. Team Asuma was summoned to help, and Ino used her Mind Body Switch Technique to force Kinkaku into sealing himself away. Tobi later seized the Benihisago and the amber pot, feeding the brothers' Nine-Tails chakra to the Demonic Statue of the Outer Path to call forth an incomplete Ten-Tails.

The two siblings looked much alike, both heavily muscled, with Kinkaku the bigger of the pair. Their hair was shaped into headdress-like crowns coloured to match their names, gold and silver, and each bore what looked like horns, whisker marks on the face, and the first character of his name inked on a shoulder.

Both are modelled on figures from the Chinese epic Journey to the West, where the demon king brothers Kinkaku and Ginkaku dwell in a lotus cave and hold five treasured tools: an amber purifying pot, a seven-star sword, a banana-palm fan, a golden canopy rope, and a crimson gourd. In that tale their mother is a nine-tailed fox, a nod to how these two carry Kurama's chakra. Their Naruto Mobile profile ranks them as senior elite jonin whose power outstripped the Five Kage, weaving ninjutsu together with those treasured tools in combat.