Chimera Technique

The Chimera Technique is a forbidden technique that was developed by Hiruko, a missing-nin of Konohagakure, in order to compensate for his lack of natural special abilities. Hiruko uses the technique to integrate the bodies of others with his own, allowing him to obtain any Kekkei Genkai they possess, as well as other special physical traits and absorb their chakra. The technique is also used by Hiruko and his followers to create formidable creatures which bear the traits of multiple animals. In Naruto Shippūden 3: Inheritors of the Will of Fire, Hiruko has used this technique to steal four Kekkei Genkai: Storm Release, Dark Release, Steel Release, and Swift Release.

In order to properly acquire Kekkei Genkai, Hiruko must meet one of the three conditions; Heaven, Earth and Human. These correspond with the Eclipse, Location and Human Sacrifices, respectively. When assimilating victims, Hiruko's body exudes a large mass of deep blue, viscous fluid that covers a large area. While assimilating victims, he can use the fluid to attack enemies with gelatinous, reforming (and rebounding) extensions.

It should be noted that the technique can be destroyed (with seemingly relative ease) from the inside out by using a dimension-manipulating technique such as Kamui. Additionally, the technique requires body modification, due to the body requiring space for the user to assimilate targets, as seen by the large scars and staples in Hiruko's chest and sides, and leaves his body rather emaciated, with a larger, unhinged jaw and shriveled teeth.

Ni could use this technique to merge with her lion-like beast, and San was able to use it to merge with Ichi and Ni, becoming a chimera beast.

Influences
A chimera is a mythological creature composed of the parts of multiple animals, and is also a genetic term for hybrid animals with more than one DNA pattern. This is likely a reference to the fact that Hiruko developed the technique as a way to adopt the genetically inherited abilities of other shinobi, regardless of his own bloodline.

Trivia

 * The technique's name is a pun, similar to certain techniques of Kumogakure-ninja, in which it has an English name with a given kanji that somewhat match the pronunciation.