Is there an out-of-universe reason for the Gundam series mech head designs?

Question

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?

EDIT

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.

Answer 1

According to Kunio Okawara, the mecha designer for the series:

"I also put the form of the chonmage, which is a form of Japanese traditional haircut worn by men, and kabuto, which is a type of helmet first used by ancient Japanese warriors, into the design of Gundam. They are my inspirations that are concealed behind the creation of Gundam."

Answer 2

the gundam head design is supposed to be a homage to samurai helmets: designed to intimidate opponents (which is why a lot of characters get scared seeing a gundam head).

prettymuch all gundam head designs have a V shaped antenna on the forhead (barring the turn A gundam, which reminds me of world war 1 german nobility/soldier); two vents on the moutpiece (barring zeta, exia, 00 Qan[t] and a few others); generally have white as the main colour, a red/black small beard, blue/green/yellow eyes, and a square element atop the head quite bizzarely a lot of japanese car designers pay homage to gundam for their car design