Another oc idea

All who have watch Fluffle puff know that dead space alicorn mare, well my idea is to make her a stallion and is like the first alicorn in existence. And a group scientist ponies find his DNA from a fossil and bring him back and is dubbed the primal alicorn. Anyway they try to use him as a weapon to over throw the princesses but he breaks free before they could, this takes place about four years before the canon. He stays in the Everfree and watches all they're activities from a distance until the changling invasion. Where he comes in and slaughter all the changlings in his way, gets to the throne room, battles Chrissy, until she and the surviving changlings get blasted.
After the heart felt reunion they turn to him to ask where he came from to only see he about to eat a live changling head, stops, puts the changling down and acts like he has no idea what they are looking at. From there on it up to any one to make up in a story, oh and he doesn't know how to talk yet and his intelligence is more than a animal but doesn't know numbers, writing, reading, or words.
just male or can stay the same since it looks like both.