Satan.
''All of you, return.'' Lucifer said towards empty space. But, all the demons in Four Seasons heard him.
The demons were annoyed that they were ordered to return. They were having fun for the first time in a long time. But, they didn't dare go against the Demon Kings, and so they started their return to spaceships.
Lucifer's plan wasn't to fight till only one man was standing. He planned to cause damage to the world so that the citizens would feel fear and the soldiers would feel less motivated to fight against them. It seemed to work since everyone was trembling in fear.
He knew if he waited for an hour or two, they would lose a lot of their demons.
However, one thing made him frown, which wasn't part of his calculations. All the demons he sent to the depths of Winterland mysteriously died. He sent them mostly to Starshow, Laughshow, and Trickshow. But, all the demons there died. It was a big loss that even took Lucifer off-guard.