Applejack is reliable and hard-working, although headstrong about doing things on her own. She tackles the annual apple harvest all by herself while her brother Big Macintosh recovers from an injury in Applebuck Season, while simultaneously helping out all of her friends with an assortment of tasks. This proves to be more than she can handle, yet she refuses Twilight Sparkle's many offers of assistance.
After she averts a stampede that was headed to Ponyville, the townsfolk hold a ceremony in her honor, where her close friends exult her willingness to help anyone. She receives her trophy without much fanfare and goes back to her applebucking, almost fainting from exhaustion
Applejack speaks with a Southern American accent, similar to the accent of the southwest Missouri Ozarks. She seems to have no reservations about getting dirty or messy, much to Rarity's dismay. She also seems to dislike things that are "too girlish" like frou-frou dresses, though it's revealed in The Cutie Mark Chronicles that, for a short time as a young filly, she wanted to be a pony of elegance.