King Aspen

King Aspen was the deer king of Thicket, a small, but powerful kingdom located within the Everfree Forest. He is the father of Prince Brambles and the potential husband to the Queen of Thicket. A serious-minded monarch, Aspen loves his people and his family dearly, and will do anything to protect them. Although haughty, Aspen appears to be much friendlier when under less dire situations and appeared to be good friends with Princess Celestia after their bad first impressions.

Space invader
Over a thousand years ago, King Aspen helped repel the invasion by Cosmos, an entity from the Andalusian constellation. With the power of the Heart of the Everfree, he held back her chaotic powers, kept the planets from falling and helped save all of Equestria. He appeared to be good friends with Queen Novo and showed her care after the battle.