He doesn’t have a name. His people are known as the Metrons, have been around for countless millennia, have lost the need for such things. On the day he is born, he already knows everything.
He is not omniscient, nor is he omnipresent, nor omnipotent. The course of development for his people has simply afforded them with the ability to absorb knowledge outside of experience and time, a biological awareness that has exceeded that of most other life-forms, sentient and otherwise. Like other species who have attained this level of existence, it has become difficult to identify with those who do not yet know this kind of perfection, this effortless existence.
This is why the Metrons prefer to keep boundaries around themselves, to avoid the hassles imposed by more primitive minds. Yet he already knows, on the day of his birth, that one day this standard will be broken, by the human named James Kirk, who will challenge everything he already accepts as normal.
Kirk will challenge, for instance, his notion of barbarity. Kirk will also challenge his notion of time. At a loss for the one and only time in his life, he will tell Kirk that humans can visit again in a few thousand years. He exists in terms that to outsiders can only be considered general, but this is the first and only time when he will find himself resorting to the most general of terms.
These are things he thinks about on the day he is born, the first and therefore original riddle of his existence. He cannot ask other Metrons how to handle such things. He doesn’t care about Kirk, doesn’t care about the Gorn who battles Kirk, doesn’t care that none of this has happened yet, or that long after it has it will still seem the same to him as it does now, or that “now” is an abstract concept, even though he exists in the very same time structure as those beings who will forever puzzle him.
And so long before it occurs the event is already a distraction for him, simply because that is his nature, the same one he shares with the rest of his kind, but it will cause him to stand apart from them, and they will never understand, and neither will he, and all he can do is think about it.
The task for him is to decide whether or not this will drastically affect his existence.