Ex-Princess Shrike

Princess Shrike was the younger half-sister of Prince Hawk, and, though not actually royal, was raised by him to challenge and kill the SkyWing queen so Hawk could have control over the kingdom. When she attempted to challenge Jasper at Hawk's urging, she was arrested and executed for treason along with her brother.

Appearance
She had red scales so dark that they were almost black, and golden eyes. She was described by Hawk to be 'bigger and stronger' than Queen Jasper, implying that she was older than her by a significant margin.

Personality
Shrike was much like her brother in terms of personality, preferring to stick to the shadows and orchestrate her rise to power behind the scenes. Though she wasn't aided by animus magic as Hawk was, she was still quite powerful due to being backed by him.