Three was the sacred number for their kind, for good fortune tended to come in threes. Three siblings, three minds, the third planet from the sun, three thousand years.
Three thousand years since they had been imprisoned, deep within the ice of the frozen continent those of this world called Antarctica.
Three thousand years was a long time to spend alone with your own thoughts, even for a creature that had spent eons among the stars. At least in the vast sea that was the void between stellar bodies, there were sights to witness, worlds to explore, even if many of them were barren and lifeless. But to be trapped in ice, having the energy eternally sapped from your bones, the minds of both yourself and your siblings being dulled, ever floating between sleep and awareness?
So when the chill subsided, when the rock-hard frost that held them in place weakened and faltered, Ghidorah did not hesitate in bursting free from their prison. From the throat of each sibling rang a shrill and piercing cry of triumph, wings spread up and towards the darkened heavens - sending ice and snow flying in great plumes of white. But of course, their emergence would not go unnoticed.
Zokoviit, the leftmost head, was the first to notice it - which was not surprising, as they tended to be the attentive of the trio. An ominous azure glow coming from beneath the ice - growing brighter, stronger by the second. There was only one creature they knew of that held such a light. Yudiinok, the rightmost head, snarled at the mere thought of the one that had sealed them away so long ago, who seemed to be returning to banish them once again - the so-called King. Kaimaunahi.
But as the source made itself known, a great dark body heaving through the ice shelf and pulling itself unto solid ground, all three heads paused at what they witnessed.
This beast was not a bulking creature of hardened scale and scarred hide, but something entirely different. For it bore the same appearance of the pale-skinned intelligent mammals that acted as the native sapient race of this world - complete with garb typically worn by humans. And yet, even still, it had similarities to Ghidorah's old foe. Scales, mostly scattered but gathered around certain places such as the eyes or forearms. Talons. A great, sweeping tail. And, most distinctly, the dorsal plates that ran along the length of the giant-human-thing's spine.
Zokoviit scented the air with his tongue, curious of this being despite the obvious aggression directed towards them. Yudiinok simply kept his teeth bared and lips curled, neck poised like a serpent ready to strike. But Nahkiin, the central head (both in position and authority), remained calm. Greatly confused, and still tense at the other beast's threat, but calm.
"Could others not say the same of you, pale-skin?" The central brother rumbled. The wings of Ghidorah remained outstretched - both as an intimidation display, and to stretch muscles that had not moved for over thirty centuries. "Is it not natural for beasts of all strokes to claim territory for themselves, even at the behest of others? It is simply the rule of nature; if you call this icy wasteland home, then we assure you that we have no intention of staking our claim here."
A brief pause; a slight tilt of Nahkiin's head, eyes narrowing, before Zokoviit would speak his thoughts. "We assumed you to be someone else; someone we fought before. But you're obviously different - why do you look like the little apes that inhabit this world?"