Appleloosa deputies

Junior deputy Star Spur and "Senior Deputy" are Sheriff Silverstar's deputy sheriffs in Appleoosa's Most Wanted. Star Spur has a bluish gray coat, two-tone black mane and tail, blue eyes, and a cutie mark of a blue star and white shooting star. "Senior Deputy" has a yellow coat, orange mane and tail, green eyes, and a cutie mark of a key ring. They are unnamed in the show, but they are named varyingly in merchandise and other depictions.

Development
According to series character designer and season five art director Rebecca Dart, "Senior Deputy"'s design was inspired by actor Don Knotts. Character designer Kora Kosicka "didn't base either of them on anyone in particular".

Depiction in the series
Star Spur and "Senior Deputy" appear in the season five episode Appleoosa's Most Wanted as Sheriff Silverstar's deputy sheriffs of Appleloosa. The two deputies work together with Silverstar to keep Appleloosa safe from the "notorious outlaw" named Trouble Shoes.

Some time during the episode, Silverstar beats the two deputies at a card game, and Applejack and Braeburn inform them that Trouble Shoes kidnapped the Cutie Mark Crusaders. Upon locating Trouble Shoes, Silverstar and the deputies place him under arrest and escort him to jail. The deputies are last seen when Trouble Shoes takes responsibility for his actions and accepts his punishment.

My Little Pony (mobile game)
Star Spur and "Senior Deputy" are playable characters in Gameloft's mobile game, referred to simply as "Junior Deputy" and "Senior Deputy" respectively. Junior Deputy's in-game description states, "This male blue pony is a deputy with an eye for security... and great-looking hats! With Junior Deputy on the case, law-breaking ponies everywhere better beware!" Senior Deputy's in-game description states, "A master tracker, Senior Deputy can track anypony anywhere in Equestria... with Sheriff Silverstar's help, of course."

Merchandise
In the Equestrian Odysseys expansion set of Enterplay's collectible card game, Star Spur is named on card #33 C, which lists the quote "Do you have a permit to carry that pie? I think the sheriff will wanna hear about this..."

Quotes
"Aw!"

- Star Spur, Appleoosa's Most Wanted

"Dagnabbit!"

- "Senior Deputy", Appleoosa's Most Wanted

"Do you have a permit to carry that pie? I think the sheriff will wanna hear about this..."

- Star Spur, Enterplay collectible card game Equestrian Odysseys card #33 C of Star Spur