Shining Armor

Shining Armor is a unicorn pony and is Twilight Sparkle's brother who has yet to appear on the show, but he is featured on a promotional stand with Princess Cadence, his wife-to-be.

According to TV Guide magazine, he will appear in Season 2's two-parter finale, which will presumably be about his wedding to Princess Cadence.

Merchandise
A "Pony Princess Wedding Castle" playset, featuring a plastic castle and Playful Pony characters Shining Armor and Princess Cadence, is set to be released August 2012. Shining Armor is the first male Playful Pony to be released.