"Felix Argyle, known as Ferris in informal settings and also as the Blue, is a major character in the 2014 Japanese dark fantasy light novel series Re:Zero − Starting Life in Another World as well as its anime television series & manga adaptations of the same name. A demi-human cat-boy, Felix Argyle loyally served Duchess Crusch Karsten as her personal knight and attendant. Because of a promise involving Crusch and the late Prince Fourier Lugunica, Felix, who insisted on being called Ferris in all but the most formal of occasions, dressed and acted like a woman. Alongside the Sword Demon Wilhelm van Astrea, Ferris was a chief supporter of Crusch in her campaign to become the forty-second ruler of the Kingdom of Lugunica."