Cheese Sandwich

Cheese Sandwich  is a male Earth pony  and the self-titled "super duper party pony" who appears in the episodes Pinkie  Pride, Equestria Games , and Twilight's Kingdom - Part  2. He was voiced by the King of Parody, Weird Al Yankovic.

Biography
Cheese Sandwich makes his debut as the featured guest character in Pinkie Pride. He is first shown on the outskirts of Applelooss, having just thrown a party for the ponies and buffalo. As he leaves, his Cheesy Sense points him in the direction of Ponyville.

When Cheese appears before Pinkie Pie and her friends, he introduces himself as the premiere party planner in all of Equestria. As his introductory song begins, he takes on a more excitable off-the-wall persona, playing the accordion and singing that he had wanted to be a party planner since he was a colt. At this point, he takes the reins of Pinkie Pie's party plans for Rainbow Dash and puts together a large birthday bash.

Later, when Pinkie feels her position as premiere party pony is threatened and challenges Cheese Sandwich to a goof off, Cheese accepts. During The Goof off, Cheese displays an even greater inclination for bizarre behavior, singing a polka version of Pinkie's Smile Song and having his own, much larger party cannon. Pinkie Pie, realizing that Rainbow Dash isn't having fun, concedes the goof off to Cheese.

Cheese Sandwich later approaches Pinkie and tells her he never meant to take her place in Ponyville. He confesses that he was actually extremely shy as a colt, and he didn't realize his dream until he left his Manehattan home and stumbled into Ponyville during a party thrown by the filly Pinkie Pie, which led to him earning his cutie mark. Having reached an understanding, Cheese Sandwich and Pinkie Pie team up to make Rainbow Dash's birthday party memorable.

Before he leaves Ponyville, Cheese gives his rubber chicken, Boneless, which he originally acquired in Ponyville at Pinkie's party, to Pinkie Pie and sets out with a second rubber chicken, Boneless Two.

During  Equestria Games, Cheese is barely seen in the audience as   Spike   attempts to light the torch.