As I watch the shows I am constantly noticing the patterns in the head designs of the mobile suits.
Any true Gundam, or otherwise important mech, will always have two eyes and usually the V horns. Any generic suit, or one belonging to a more shallow villain, will only have one eye.
Is this any kind of cultural reference?
In Unicorn characters say that a mech becomes a Gundam when the horn opens into a V. As if the V horns are something very specific.