Scarlet
From Wings of Fire Fandom Mirror

Queen Scarlet was the queen of the Skywings. She won her position through combat and was able to keep it with a combination of her fighting skills and control over the fiery Peril. She later was betrayed by Peril when Peril found out what had truly happened to her mother and Scarlet murdered Peril's friend Osprey. She was badly injured by Glory's venom when she was hit in the face with it.
She was fond of gladitorial style fights, and would pit her captured enemies against each other for her own enjoyment. Extremely self-centered, she enjoyed watching dragons die and if they survived, it wasn't for long because she would pit them against her invincible champion Peril.