There were once many magic mirrors that could create foal clones of any pony who looked within, but most were lost to time after Dream Valley was abandoned. One cracked mirror, however, remained, and it was discovered that it could create a foal of any two ponies who aligned themselves in just the right way. It was this mirror that Applejack and Rainbow Dash used to produce their foals when the time came.
 
Apple Zap is Applejack and Rainbow Dash’s second foal. She is very much Rainbow Dash’s daughter, inheriting a love for speed and competition, though unfortunately also a love for shirking responsibilities. While she lacks wings, her light frame and powerful legs make her a champion sprinter. She also has a special knack for growing Zap Apples, having learned everything she knows from Great Granny Smith.