Aslan

The giant threw his horn into the sea. Then he stretched out one arm—very black it looked, and thousands of miles long—across the sky till his hand reached the Sun. He took the Sun and squeezed it in his hand as you would squeeze an orange. And instantly there was total darkness.

Everyone except Aslan jumped back from the ice-cold air which now blew through the Doorway. Its edges were already covered with icicles.

"Peter, High King of Narnia," said Aslan. "Shut the Door."

Peter, shivering with cold, leaned out into the darkness and pulled the Door to. It scraped over ice as he pulled it. Then, rather clumsily (for even in that moment his hands had gone numb and blue) he took out a golden key and locked it.

Chapter 14 Night Falls on Narnia, The Last Battle