Blue Knight

The Blue Knight (蒼の騎士 Ao no Kishi) is an unknown male who is introduced at the end of the fourth volume of the manga. During a battle with Kish at an aquarium, Ichigo is in danger of losing when the Blue Knight appears and rescues her. The Blue Knight tells Ichigo that he "is hers" and that he was "born to protect her." During the rest of the series, Ichigo initially suspects Ryou of being the Blue Knight due to both having blue eyes, blond hair and their both saying that she is heavier than she looks the first time they carried her. She later suspects Keiichiro of being the Blue Knight after he turns up with an injury in the same spot as the Blue Knight on the same day. As the final battle of the series approaches, it is revealed that the Blue Knight is actually the alternate persona of Ichigo's boyfriend, Masaya, created out of his desire to protect her. In the original Tokyo Mew Mew…