Lyra Heartstrings is a unicorn pony with a green and white striped mane and tail. She is made infamous for sitting like a human in some scenes.
- Lyra Heartstrings will meet Thomas and his friends in Thomas' Adventures of My Little Pony Friendship is Magic - A Canterlot Wedding (Full Movie).
- Lyra Heartstrings is also best friends with Millie.
- Lyra Heartstrings also has a song called Anthropology.