Dark Moon

Dark Moon is a male background unicorn pony who appears in several episodes throughout the series. He has a dark gray coat, gray mane and tail, blue eyes, and a cutie mark of a white crescent moon. He is not named in the series, but he is named in merchandise.

Development and design
Dark Moon shares his design and eye color with Neon Lights, "Flank Sinatra", S02E26 Unnamed Unicorn Stallion #1, and unicorn Shooting Star, shares his design with S02E26 Unnamed Unicorn Stallion #2, and shares his mane and tail style and eye color with Star Hunter, Twilight Sky, and "Cosmic".

Dark Moon appears as a conceptual Pegasus pony in incidental male pony artwork by Robin Mitchell.

Season two
Throughout the series Dark Moon mostly appears in crowd shots. He first appears in the season two episode Sweet and Elite watching the Wonderbolts Derby. He later appears during Applejack's speech at the beginning of The Last Roundup.

In The Super Speedy Cider Squeezy 6000, he watches the cider competition between Applejack's family and Flim and Flam, and in A Canterlot Wedding - Part 2, he appears at both wedding ceremonies.

Season three
In season three, Dark Moon appears at the Summer Harvest Parade crowd in One Bad Apple and at Twilight Sparkle's princess coronation in Magical Mystery Cure.

Season four
In season four, Dark Moon appears at the Summer Sun Celebration in Princess Twilight Sparkle - Part 2, at the Rainbow Falls Traders Exchange in Trade Ya!, in the Crystal Empire stadium crowd in Equestria Games, and in the auditorium when Discord and Lord Tirek appear at the end of Twilight's Kingdom - Part 1.

Season five
In Tanks for the Memories, Dark Moon hangs icicles in Ponyville in preparation for winter. In Appleoosa's Most Wanted, he watches the Appleloosa rodeo. In Make New Friends but Keep Discord, he appears as a guest of the Grand Galloping Gala.

Appearances
Times are approximate.

Merchandise
In the Canterlot Nights expansion set of Enterplay's collectible card game, Dark Moon is named on card #11 C, which gives him the description "Dark Moon holds the record for most weddings crashed in all of Equestria. He always brings a lovely gift and acts like a perfect gentleman. Dark Moon just really loves wearing his tux!"