Prince Blueblood

Prince Blueblood is a royal male unicorn pony who resides in Canterlot. He is the distant nephew of Princess Celestia and Princess Luna and the cousin of Princess Cadance. He starts out as the object of Rarity's affections, but once they meet in person, he falls short of her expectations.

In When the Cold Breeze Blows Away, he'll attend the How I Can Help Make the World great ceremony as being a minor character like half-antagonist and half-protagonist in USRAC War