Fearless is most likely one of the dragonets that was with Starflight when he woke up in the dormitory, but she was never mentioned by name.
At first, Fearless attacks Darkstalker, along with Mightyclaws and Mindreader. She is then later introduced to Darkstalker by Moonwatcher, when she asks Darkstalker some questions about the Lost City of Night. Then, she asks Moon a barrage of questions once she is told that Moon has mind reading powers and prophecy abilities. After Darkstalker states that he can enchant objects without consequence, Fearless runs out of the room to give Darkstalker something to enchant. Coming back with a hurriedly-made bracelet made out of twisted wire, she asks for super strength, and then tests it out by slamming her tail into a stalactite, shattering it on impact.
She goes with Mindreader, Anemone, Darkstalker, Sunny, and Moon to save Stonemover, when it is revealed that he is in danger. Later in the book, she goes to the Night Kingdom with the NightWings and later, back to the Lost City of Night with most of the NightWings.
Fearless is shown briefly in battle, attempting to attack an IceWing dragonet. Winter comes between them and breathes frostbreath onto her wing, causing her to crash. Wounded, she dragged herself into the shelter of a small cave.
Later, in the epilogue of the book, Clay mentioned that Fearless, Tamarin, and Pike were doing a presentation about Darkstalker's history for school.
- Fearless is one of the twelve known NightWings having one-word names, the others being Greatness, Obsidian, Slaughter, Vengeance, Wisdom, Eclipse, Listener, Thoughtful, Prudence, Discretion, Vision, and Queen Vigilance.