Rainbow Dash is a little blue pegasus pony and one of the main characters of the My Little Pony Friendship is Magic cartoon series. This adorable little creature maintains the weather and clears the skies in Ponyville. Rainbow Dash is a huge fan of the Wonderbolts squad of Pegasus ponies, and she joins them as a full member in Newbie Dash. Rainbow Dash has a pet, a green tortoise named Tank. She passed Nightmare Moon's tests of loyalty by creating an illusion of an elite flying team called Shadowbolts. Rainbow Dash, who could not abandon her friends for her own heart's desire, represents the spirit of loyalty! A My Little Pony Rainbow Dash progress bar for YouTube.