Bimbo Possession

With his wish Jon created a race of Bimbos possessing the bodies of the unfortunate.
The bimbo entity will enter the body but in the beginning nothing will happen. The bimbo builds up strength and can „come out“ from time to time. It will then take over the host and transform its body. In this state it will try to spread the curse to others. But after a certain time the bimbo has to go back into the host transforming its body back and giving him control. The more often this swap happens, the stronger will be bimbo be. Additionally, if multiple bimbos as in close proximity all of them will gain strength.
The bimbo entity may communicate with the host.