Fiona, also known as Agent Fairy, is a birdman associated with Eden.
As a seraph, her markings are pink-colored.
Seeker (探索者（シーカー）, Shīkā): An ability that allows Fiona to detect and locate other birdmen within a determined range, which is significantly larger if she is in her transformed state. Once located, she is capable of determining their current actions and movements as well as read their minds and memories in order to obtain information including their real names and their personal background. She can also determine whether or not a birdman has awakened, as well as their awakened ability.