Their captor snapped his fingers and suddenly all four of them were zapped with an odd green-colored bolt of electricity.
"Please," Jon said, becoming dizzy. "Don't do this."
But he didn't comply. Instead, he moved towards Biff and locked lips with him. Biff tried to pull away, in disgust, but after that bolt of green electricity, he felt much weaker than normal. Three seconds into their "kiss", the green electricity came back, this time engulfing both Biff and their captor. The electricity was so bright that Jon and the other two hostages had to shut their eyes. And when they opened them again, their captor was tied up and Biff was free. But they all knew that he wasn't really Biff.
He looked down at his muscular body and smiled. "Strength, it is," he said, flexing his muscles and admiring how powerful he looked and felt.
"What are you going to do to the rest of us?" Jon asked.