The orange earth pony who works at Sweet Apple Acres is Applejack.
Applejack is one of the central characters in My Little Pony: Friendship Is Magic and a member of the Mane Six. She lives and works at Sweet Apple Acres, the Apple family farm in Ponyville, where she helps harvest and sell apples with her siblings and grandmother.
Her orange coat, blonde mane, cowboy hat, apple cutie mark, and Southern-style accent make her especially recognizable. Applejack represents the Element of Honesty and is portrayed as hardworking, dependable, direct, and strongly devoted to her family. Her older brother is Big McIntosh, her younger sister is Apple Bloom, and Granny Smith is her grandmother.
A common mix-up is confusing Applejack with another Apple family member. Apple Bloom is her younger sister and a filly, while Big McIntosh is her older brother. Applejack first appeared in the 2010 series Friendship Is Magic, where voice actor Ashleigh Ball also voices Rainbow Dash.