Mac Grimborn

Mac Grimborn is the main antagonist turned supporting protagonist of the season 6 premiere of My Little Pony: Friendship is Magic. He is Twilight Sparkle's second in command.

Faction

 * The Storm King's Army (formerly)
 * House Grimborn
 * The Mane 6 (currently)

Friends/Allies

 * The Storm King (formerly)
 * Twilight Sparkle
 * Rainbow Dash
 * Pinkie Pie
 * Applejack
 * Fluttershy
 * Rarity
 * Spike
 * Princess Celestia
 * Princess Luna
 * Princess Cadance

Occupation

 * The Storm King's second in command (formerly)
 * Twilight Sparkle's lieutenant (currently)

Goals

 * Betray the Storm King (succeeded)
 * Destroy the Mane 6 (failed; formerly)
 * Annihilate the Princess of Friendship (formerly)
 * Become friends with ponies (succeeded)