Twilight Sparkle Edit
When Gordon saw Percy's Pony he ran away over it. In "Thomas Precy and the Pony" Percy then takes the pony to the vet but on the way he runs out of water in his tank so he asks Thomas for help. Thomas leaves his passagers behind to help with Percy's Pony Thomas throws the Pony into a ditch and then lies to Percy that the pony didn't live. Edward then tells Thomas about Percy running away because of his pony feeling sad. So Edward and Thomas go after Percy.