Daimon

Daimons were the monsters that serve Professor Tomoe, Kaolinite, and the Witches 5 in the Reloaded arc of Pretty Soldier Sailor Stellar. Living beings are used as hosts for Daimons, with the host transforming after being unable to control their body. Once the Daimon is killed, the host is reverted to their original forms and continues living. In the case of the Witches 5, they were considered 'perfect' Daimon's and as such, were permanently merged with their Daimon.