The Kilaakians (キラアク星人?, Kiraaku Seijin, lit. Kilaak Planet People) are a race of aliens and are the main antagonists of the 1968 film, Destroy All Monsters.
They hail from Planet Kilaak, an undiscovered planet either somewhere within the Asteroid Belt... or which became it.
While all played by actresses, the Queen in her premature victory speech mentions that the Earth now belongs to “every man, women and child of the Kilaak”
It may be a cultural thing that only the elite dress in a way non-androgynous by human standards. Aliens denying their people individuality was already played with for horror in the prior Godzilla film, Godzilla vs the Astro Monster.
Toys were was released depicting queen and henchperson
Despite their appearance, they are not organic and when forced into temperatures lower than that which they can comfortably survive , take on a metallic, slug-like form until favorable conditions resume
Which, given they are halted before they can begin terraforming the earth, means those trapped in the rubble of their old base after Godzilla destroys it, will be there for a very, very long time.
I note this seems similar to the meteor form Ghidorah arrives in their original film. Perhaps their connection is closer than we think...
