Let them work for him.

"You people can work for me, for now atleast." He said, waving his hand, as matching tattoo's appear on the base of their necks. After the sisters notice the tattoos on eachother, and have theirs pointed out by their sisters, Prue turned to Danny, asking "Why did you put these on us?" "It'll allow me to control you while still giving you four free will, you can pass it off as something you four did during a night of sisterly bonding." He said as he copied their powers into him and shimmered them back to the mansion.

Once he got back, he made some changes to the house, one was making it seem like a man was living there. Another was so that the when he wanted, the living room was changed into his throne room, and the dinning room would change into the meeting/war room. He had a long couch placed in the living room which wouldn't make sense short of being used for laying down on, atleast until it transformed into a throne. It changed into one big chair with four connected chairs, two on each side, for his four generals. Once his changes had been made, he sat down on his new throne, with the sisters sitting next to him, Prue and Piper on his right, Phoebe and Paige on the left. He had them sitting in age order and also figuring that if he placed the telekinetics on the outside, and the fighter and woman who could blow up and freeze things on the inside, if someone attacked him, they could stop it without him getting up. "So ladies, how do you like the changes I made?" Danny asked. The four all commented on it being good and long overdue, reguardless of what they truely believed. "Now, as my generals and advisor, I will be looking to you for help, so what shall our next action be?" He asked them. "I would suggest working on allying ourselves with some of the higher level demons." Prue suggested to him. "I think we should start working on explaining you to the public, we do draw some attention, so if we come up with a cover story now, when you're seen in public with us, we won't be caught off guard. The best thing I could think of would be saying that you're dating the four of us, that way, reguardless of who you're found with, it'd be explainable." Piper said to him. "We should work on adding more to our army, possibly making some more children." Phoebe said, teasing Danny's dick. "I agree with Phoebe's idea, sort of. I think we should just fuck." Paige simply said.