Thea is a playable character in Fire Emblem: The Binding Blade. She is the middle sister of Juno and Shanna and the commander of a group of Ilian Pegasus Knights. Even though her contract expired when she joined the United Lycian Army, she desired to stay with Klein as much as she could due to strong feelings toward him. While she displays the abilities of a masterful leader, she is awkward when it comes to love. A stern, dutiful middle sister, Thea has problems at expressing affection through words, to the chagrin of her younger sister and love interests, and easily becomes embarrassed. She is also very protective of her younger and older sisters, going out of her way to make sure they are happy, as she tries to pat the former's head after upsetting her in their B support, and personally arranged the latter's wedding and worries about both her and her baby. As the poor in Ilia have no choice but to turn to becoming mercenaries to live, the policy that Illian mercenaries should never question their employer was embedded in Thea from her hometown. When her group was employed by the Kingdom of Etruria to work with Klein against the United Lycian Army headed by Roy, she followed suit when Klein joined their ranks. After the war, she becomes the new flightleader.