| Diana Fairchild | |
| Gender: | Female |
| Series: | Kamen Rider: Echo Demon |
| Motif: | Heroine |
| Rider Type: | Hero |
| Homeworld: | Earth |
| First Appearance: | |
| Last Appearance: | |
| Number of Episode Appearances: | |
| Actor: | |
| Transformed Diana
| |
Diana Fairchild briefly transformed into what was called Transformed Diana by the after she stole Ibuki's Demon Whistle.
Diana Fairchild[]
She is Ibuki's apprentice. Her parents were killed by Makamou & only choose to become a Demon in her quest for revenge. During her training as a Demon, she was able to transform into a Demon, in an attempt to save Ibuki. She eventually chose to give up her goal of being a Demon & resumed a normal life.