Nova's character was created by Toshihiro Hirano. She was originally one of his characters from a different anime that was never realized and produced. She is named after the Chevrolet Nova.  , an anime-only character, is the head antagonist of the second season who awaits the day when Cephiro will crumble due to lack of support from Princess Emeraude. Debonair is ultimately revealed to be an embodiment of the collective darkness within the hearts of Cephiro's citizens, thus possessing tremendous power with a desire to rule over Cephiro. She is not present in the manga, which instead focuses on the battles between Cephiro and the three invading countries of Autozam, Fahren, and Chizeta. She gets her name from the Mitsubishi Debonair. An alternate version of her appears in "Tsubasa" as the Kiishim.