Comet Tail

Comet Tail is a background unicorn pony who appears in several episodes throughout the series. He has a light yellow coat, blue mane and eyes, and a shooting star cutie mark. The show does not name him, referring to him as "Boy Pony" in the credits of Princess Twilight Sparkle - Part 2, but he is named in merchandise.

He shares his mane style, eye color, and cutie mark with "Stormfeather", his design with "Written Script", Rare Find, and Bright Bulb, and his mane style with "Chocolate Haze", "Klein", Emerald Green, and "Silver Script". He also shares his name with a G3 Earth pony mare.

Depiction in the series
Comet Tail first appears in Sweet and Elite at the Wonderbolts Derby, wearing a hat. Several duplicates of him are also seen among the crowd. He then appears briefly in Hearth's Warming Eve, listening to Spike as he narrates the pageant.

In The Last Roundup, Comet Tail is in the crowd when Applejack gives a speech before leaving for the rodeo competition, standing alongside Twilight Sparkle. He makes several appearances in The Super Speedy Cider Squeezy 6000, standing in line to get apple cider and having a speaking role near the end of the episode.

In One Bad Apple, Comet Tail is seen watching the Summer Harvest Parade. In Sleepless in Ponyville, he is briefly seen arguing with Cherry Berry by an overturned cart. He appears with Cherry Berry again in Princess Twilight Sparkle - Part 2, with another voiced role provided by Tabitha St. Germain.

Appearances
Times are approximate.

Merchandise
Comet Tail is named with a trademark symbol in the eighth wave of mystery pack toys and collector cards. The toy uses the Shining Armor mold but features Comet Tail's color scheme and cutie mark, and even the art on the collector card uses a recolored Shining Armor vector. The card states that Comet Tail "runs so fast that he looks like a shooting star!"

Comet Tail is also named on his Enterplay collectible card game card α #54 C, which gives him the description "Comet is an expert at using his magic to speed himself up and run really, REALLY fast. He's NOT an expert at using his magic to slow back down."

Quotes
"I wouldn't pay one cent for this dreck!"

- The Super Speedy Cider Squeezy 6000

"Help! Help!"

- Princess Twilight Sparkle - Part 2