Elias is a conflicted Mask who seeks freedom from the cruel Martial Empire, struggling between the empire's expectations and his own ideals.

Helene is Elias’s best friend and fellow Mask, dedicated to the empire yet grappling with her own moral dilemmas and a secret healing ability.

The Commandant is the harsh leader of Blackcliff and Elias's mother, whose calculated actions and association with the Nightbringer cast a looming threat.

Keenan is a member of the resistance with close ties to Laia, offering a sense of familiarity and safety that she longs for.

Marcus is a ruthless Mask and rival in the trials, known for his cruelty and unwavering allegiance to the empire.

Zak, Marcus's twin, is more reserved and thoughtful, contrasting his brother's brutality yet remaining a significant figure at Blackcliff.

Izzi is an enslaved girl at Blackcliff whose friendship with Laia fosters mutual bravery and break from their imposed fears.

The Cook is a scarred former resistance spy who remains skeptical and cautious, often serving as a reminder of the resistance's potential for betrayal.

Mazen is the leader of the resistance, depicted as a fervent but flawed strategist whose decisions have profound consequences.

Darin, Laia’s brother, is imprisoned due to false accusations and is the catalyst for Laia's journey to rescue him from the empire's clutches.

Nightbringer is a mysterious and powerful jinn whose brief appearance suggests a larger, ominous role in the unfolding events.