Deneb  

The Swan, デネブ

The Silver Key Celestial Spirit known as Deneb has a contract with Yukino Aguria. He can be summoned during the encounter with Eclipse Mother Pisces while she travels through her water tunnel. Although Deneb does not require sympathy for his non-white wings, Levy acknowledges that she did not consider this aspect. Yukino instructs Deneb to locate and confront Eclipse Mother Pisces in combat. However, Deneb explains that telling him to do his best has the opposite effect. In response, Yukino informs Deneb that he is not required to exert himself to the fullest extent, which allows Deneb to utilize Summer Triangle, successfully sending Mother Pisces flying. Levy commends Deneb's actions, and as a result, Deneb departs feeling somewhat annoyed.