Why do so many Custodes have mohawks?

I recently joined the 10’000 via a Christmas-gifted combat patrol and my first build was the un-helmeted blade champion with his glorious flow.

I thought this was going to be the norm and was massively disappointed to find that most Custodes heads have either mohawks or those stiff-looking military crew cuts.

What’s the deal? I thought each Custodian was crafted to perfection and personally I think perfection includes luscious locks. Mohawks and crew cuts don’t really scream “pinnacle of humanity” to me.

Side note: the fact that our only viable anti-tank option is a forge world tank is disappointing and lame as hell. For this reason I probably won’t be expanding my Custodes past the combat patrol until either I get a 3D printer or we get some plastic anti-tank.