How Not to be Virtuous: Wormtail

I'm not going to remark upon the use of time travel in Harry Potter and the Prisoner of Azkaban. Captain Kathryn Janeway, of Star Trek: Voyager, once said that thinking about time travel gave her a headache. Puzzling it out certainly gives me one. I'd be interested to see if the Harry Potter and Philosophy book has an essay on the subject.

Nor am I going to write about identity and the distinction between appearance and reality with regard to it, as I did for The Chamber of Secrets, even though that sub-theme is even more prominent (and with all those shape-shifters in The Prisoner of Azkaban, even more confusing).

What I am going to scribble in the margins about is how Peter Pettigrew - Wormtail - fails to display virtue.