Macky is a minor character in the series. She made only one appearance in the episode, Macky the Macaroni Penguin.
Macky is a baby macaroni penguin. Diego is the first person she met after being born. At first, Macky had mistaken Diego for her mami after meeting him. On Diego's way to Penguin Island, he taught Macky things penguins do, such as waddle, slide, and hop. When the other baby macaroni penguins were born, Macky taught them everything she knows, thanks to Diego.