Hiruko

卑留呼

Although Hiruko was born without any natural special abilities, he compensates by employing the Chimera Technique, a forbidden jutsu he developed that enables him to acquire Kekkei Genkai by merging the bodies of other ninja with his own. Having already stolen four Kekkei Genkai from the other Great Nations, Hiruko possesses various abilities and physical traits from his victims, such as enhanced strength, and continues to seek more.
Alongside these powers, Hiruko and his followers can use the Chimera Technique to create literal chimeras, including a large, bird-like monster that sheds explosive feathers and wolf-like beasts that attack using tentacle-like appendages.
Via his Chimera Technique, Hiruko has obtained four Kekkei Genkai: Steel Release, Swift Release, Dark Release, and Storm Release, as well as an unnamed three-eyed technique. It remains unknown whether he has acquired any others.
Additionally, he has a section on the palm of his hand that allows him to literally "absorb" techniques thrown at him.