Malfeas is a corruption of Mal Reynolds.
Adrian, the River of All Torment, was more dangerous than he had ever known.
But it wasn't her fault.
It was his.
For kissing Cecylene, you see.
He wasn't supposed to do that. She wasn't young, or innocent, but he thought she was. And she didn't seduce him, or force him. He just made a choice.
He kissed her, that day.
That's why he's a special Hell.
(From the thread: http://forum.rpg.net/showthread.php?p=6231913)