How we cite our quotes: (Chapter.Paragraph)
Quote #1
'I'll ask once more,' he said in a low voice, wiping a hand down his face to clear away the rain. 'Who are you?'
[…] 'One of the Devil's brood,' he answered. (P.10-11)
In Patch's first introduction in the book, he identifies himself as associated with the Devil, often thought to be a fallen angel as well. This link is a pretty clear connection between Patch and evil.
Quote #2
The boy clasped his hands around Chauncey's; their heat scorched him and he cried out.
'I need your oath of fealty,' the boy said. 'Bend on one knee and swear it.' (P.16-17)
Looking for some proof that Patch is indeed pretty vicious? He tortures Chauncey into swearing his loyalty. Not exactly a friendly maneuver, we'd say.
Quote #3
Fallen angels are the same evil spirits (or demons) described in the Bible as taking possession of human bodies. Fallen angels roam the Earth looking for human bodies to harass and control. They tempt humans to do evil by communicating thoughts and images directly to their minds. If a fallen angel succeeds in turning a human toward evil, it can enter the human's body and influence his or her personality and actions. (19.44)
This is a helpful little explanation about how fallen angels bring evil into the human world, brought to us courtesy of Nora's Google search. The passage also seems to indicate that fallen angels are always, and will always be, evil. Information like this makes Patch's character all the more unique for wavering between good and bad.