God's Favorite Sons: Lucifer, Gabriel, Morningstar
Lucifer's mouth twitched slightly. "I can't," he said, and there was a dangerous edge creeping into his voice. What, exactly, was Gabriel playing at, here? His brother's words felt like a test, not casual conversation. — Or was that just his paranoia, his fear that his brother would turn against him and play with the Winchesters again?
"I don't have another vessel. I don't have anywhere to go," he snarled. "I've kept Cassie alive this whole time, biding my time for another meatsuit, but I don't have one that's not going to implode on me unless it wears a nametag saying 'Hi, my name is Winchester'."
His hand tightened on Gabriel's shoulder. "So no, little brother, I'm not giving him back. And at this point, I might as well just take over."