Big McIntosh

Big McIntosh is a male Earth pony, the older brother of Applejack and Apple Bloom, Sugar Belle's husband, and a member of the Apple family. He makes his debut in the first episode, during which he idly walks in Ponyville the moment Twilight Sparkle first arrives. Later, Applejack introduces him during the Apple family reunion, although he has no speaking roles until the fourth episode, Applebuck Season. He is soft-spoken and laconic, and often replies with a simple "eeyup" or "nnope." He is first called by the nickname Big Mac in The Cutie Pox. Later episodes refer to him with this nickname more often than with his real name, even in the credits.

In When the Cold Breeze Blows Away, he would be coronated as the fifth ruler of Equestria after being turned into an alicorn, just like "Do Princesses Dream of Magic Sheep?" where he's an alicorn in the Ponyville dreamscape.