Lindsey Nightfield is one of the main Cures & She is the lead and main protagonist of Owl City Pretty Cure!. Lindsey is very cool, bright personality but she is very mature. She is loves to seen fireflies in the night. Also she is loves to read books especially fairytales.
Her alter ego is Cure Firefly and her theme color is blue. She is represented by spades. She can change into two alternate forms, Fairy Dust & Shining Pixie.
- Annaliese Nightfield - Annaliese is Lindsey's mother.
- Joshua Nightfield - Joshua is Lindsey's father.
- Bryan Nightfield - Bryan is Lindsey's brother
Fairy Dust is one of the form changes, Cure Firefly can use.
Shining Pixie is one of the form changes, Cure Firefly can use.
- Firefly Shoot- Cure Firefly's solo finisher. She needs her LovePreBrace for it.
"Kawarunrun! Pretty Cure Kururin Mirror Change!" - Kawarunrun! Pretty Cure Kururin Mirror Change! is the official transformation phrase used by Lindsey Nightfield in Owl City Pretty Cure!.
- Lindsey's English voice actor was actually planned to Lindsey Stirling, which she is featured from the song, Beautiful Times.