The problem with that is that Puck was first seen being knocked out by a normal human agent of Department H BEFORE any brainwashing took place.Originally Posted by kozzi24
A better case might be that excessive and repeated usage of alcohol can affect his body chemistry, and reduce his durabilty for long periods of time (months, based on Vol.2) until it completely leaves his body tissues. After all, he started Vol.2 coming off a lengthy bender...