Master & Servant

With Oberon in New York, Puck runs away as fast as he can. But he returns and fights his Lord, despite knowing he doesn't have much chance of defeating him.

What was going through Puck's head between running away and coming back?

What went through Owen's head when he dipped his hand in that cauldron? Being Puck, he must've known what would happen -- so why did he do it?