Lucius

He has failed everyone. He has failed the Dark Lord. He has failed his wife. He has failed his son, and now he can only imagine what they must be enduring due to his Master's fury aimed at Lucius not getting that prophecy – that damned prophecy – and he feels like this is the lowest he has ever sunk.

The Dementors leave him alone, for the most part. At first, he wondered if the Dark Lord had ordered them not to touch the prisoners. But then he experimented, and thought of Draco's first Christmas.

He was out for 3 whole days.