He can't be a cannibal, he's not a Pawniard. Whether that makes him less of a monster . . . is up to interpretation.
I'm actually pretty sure that it would hurt Willy more than the Pawniard if the the former would attempt to eat the latter. Certainly no nutritional value.
@FireSpartan5 Actually, did you know that Pawniards contain high amounts of iron? Iron makes you stronger!
I mean, eating a stapler would give you a lot of iron as well, but I wouldn't recommend that either X_X