Asgore is a Boss Monster with broad shoulders, a blond mane and beard, and two large curving horns. He wears a suit of armor, a purple cape with yellow pauldrons, and a crown on top of his head; he also sports an intimidating stature.

Despite the game lore, Asgore should usually not be tagged as a monster, since that tag is only for creatures that look visibly monstrous. In his usual form, it is more appropriate to tag him as an anthro goat.