Luchia

Rucia (ルチア) is a Harpy and a close subordinate of former Demon Lord Frey. Together with her sister, Claire, they are known as the Twin Wings.

Appearance
She bears an identical appearance to her sister. Her distinguishing traits are her blonde hair, and her shorter bangs.

Plot
She's introduced as Frey's escort during the Walpurgis Banquet. She appears again as an escort during Tempest Founder's Festival.

Trivia

 * She makes her debut much earlier in the anime than the manga or light novel canon, she's briefly seen alongside her sister grooming Frey's wings.