Ponet

Ponet is the placeholder name of a male unicorn with a grayish-purple coat, dark goldenrod and pale yellow mane and tail, green eyes, and usually a cutie mark of a yellow star surrounded by multiple white smaller stars. He is unnamed in the show, and is called by the title Elite Pony in another depiction.

Development and design
He shares his mane and tail style and colors, eye color, and usual cutie mark with Compass Star, shares his design with "Poppycock", S02E26 Unnamed Unicorn Stallion #4, shares his mane and tail style and eye color with "Sightseer", shares his mane and tail style or sometimes design with Royal Pin, shares his mane and tail style and sometimes eye color with Starry Eyes, shares his mane and tail style with "The Tenth Doctor / Doctor Whooves #3", shares his tail style and coat color with S04E19 Unnamed Earth Stallion #1, shares his tail style with Perfect Pace, "Raggedy Doctor", "Emerald Beacon", "Star Gazer", "Madden", S04E22 Unnamed Unicorn Stallion #1, S04E17 Unnamed Earth Stallion #4, sometimes shares his design with "Star Bright", sometimes shares his mane and/or tail style with "Earl Grey", resembles S04E24 Unnamed Unicorn Stallion #1, shares his coat and mane and tail colors with "Stormbreaker", shares at least the design of his usual cutie mark with Commander Hurricane, and has a similar usual cutie mark to Twilight Sparkle, "Masquerade", and in some depictions Photo Finish.

In mid-March 2011, Lauren Faust was asked "Hi Lauren, I have a question... Is everypony in the crowd in Show Stoppers [link @] supposed supposed to have a 'blank flank', as in some sort of Easter Egg? Or was it a silly mistake" and answered "It was just an oversight. Wish I had a more interesting answer for you. Sorry."

Depiction in the series
Ponet first appears at the Summer Sun Celebration in Friendship is Magic, part 1; in the very next episode, he is in the crowd welcoming Princess Luna to Ponyville. He also appears in Rainbow Dash's Grand Galloping Gala fantasy in The Ticket Master and attends Trixie's magic show in Boast Busters. In Call of the Cutie, he attempts to paint on a canvas, but Apple Bloom splats an apple on it, splattering Ponet with applesauce.

Ponet watches the Running of the Leaves in Fall Weather Friends, the Cutie Mark Crusaders' talent show performance in The Show Stoppers, and the Summer Sun Celebration in Twilight Sparkle's flashback in The Cutie Mark Chronicles.

In The Mysterious Mare Do Well, Ponet cheers for Rainbow Dash after she saves Aura and again after she saves Cream Puff, and he appears in formal attire at the Canterlot Garden Party in Sweet and Elite. He appears in Hearth's Warming Eve and The Last Roundup, sits at a cafe table with "Lightning Bolt" in Hearts and Hooves Day, and appears at both wedding ceremonies in A Canterlot Wedding - Part 2.

Ponet watches the Summer Harvest Parade in One Bad Apple, even taking part in the parade with a different cutie mark in one shot, and attends Twilight's princess coronation in Magical Mystery Cure.

Ponet appears next to Shoeshine in Princess Twilight Sparkle - Part 1, watches the Summer Sun Celebration in the following episode, dresses up as Star Swirl the Bearded in Three's A Crowd, attends Rainbow Dash's birth-iversary party in Pinkie Pride, appears at the beginning and end of Simple Ways, and is seen briefly in Filli Vanilli and It Ain't Easy Being Breezies.

In For Whom the Sweetie Belle Toils, Ponet is in the audience at the Cutie Mark Crusaders' play and in Sweetie Belle's dream, and he appears in Leap of Faith, Trade Ya!, Equestria Games, Twilight's Kingdom - Part 1, and at the end of Twilight's Kingdom - Part 2.

Appearances
Times are approximate.

Adventures in Ponyville
In the game's outro, he appears in the background, with no cutie mark.

Royal Wedding Interactive
He appears in the background of The Ceremony, with a somewhat different mane style and a slightly-differently-colored outfit.

My Little Pony (mobile game)
He, with a differently-designed-but-same-colored stars cutie mark, is a character called "Elite Pony" in Gameloft's mobile game. He was added to the Android version of the game on April 30, 2014 before being removed a short time later. His in-game description states "With a spring in his trot and a top hat on his head, this pony is always ready to add a touch of class!" The game depicts him wearing his outfit from Sweet and Elite, A Canterlot Wedding - Part 2, Magical Mystery Cure, Princess Twilight Sparkle - Part 1, Simple Ways, For Whom the Sweetie Belle Toils, Equestria Games, and Twilight's Kingdom - Part 1.

My Little Pony Micro-Series
In Issue #8, he appears on page 5 at a table with "Noble Laureate" and Gingersnap.