Hmm, that seems very likely. So he had to use a head sized extra large to cover up for the other guy's long hair and beard. This shows (to my mind) a few things.
1. These people although evil are not the sharpest knives in the drawer.
2. They were in a rush, and now they're getting desperate.
3. They severely underestimated the determination, strong motivation and intelligence of the Opposition.
4. Because Zero's "life" is mostly fiction, they have precious little material to work with.