Kimera

A Kimera (キメラchimera) is a combination of spiritual bodies to reform them into a new one.

Overview
Over 400 years before the main Bleach time-line the idea for Kimeras was presented to the Panteon. It was present by the Shuhan of the Mahō Research and Development Division Mushoku Kaigan. His theory was instead of creating inner spiritual beings, was to cojoin the spiritual bodies with other spiritual bodies of different spiritual species. He wanted to understand if it was possible to create a species that had the powers and strength of species like Shinigami, Hollows, Senjungami etc and without any weaknesses. He developed the technqiue call Keitaiketsugou (けいじょうけつごうform union). With this technique he could incorporate other spiritual bodies or the remains into another living soul. After countless trial and error he did create one Kimera that survived the process. However it's intelligence was around the same level as a Gillian. It killed numerous Shinigami and Senjungami. So Mushoku decided to seal his Kimera away, for he thought he could reverse the process. Mushoku has yet to find a away to do this without killing the Kimera. He created a spell that can kill a Kimera but cannot separate the bodies.

Furthermore it has be dubbed a forbidden Mahō practice by Mushoku and using such techniques are punishable by death. Though its rumored that other have done experments in it and have create Kimeras of great strength and intelligence.

Natural Abilities & Powers
Enhanced Strength: The majority of all Kimera will get a boast in physical strength. This is if the bodies are correctly combined with the host. This will add part of their strength to the host's muscles.