Homura

Homura is called the 'Sekirei Guardian' as he used to protect unwinged Sekirei until they found their Ashikabi. This mission was given to him by Sahashi Takami. Homura's power, sex, and gender were unstable (a running gag throughout the series prior to him being winged was when he's about to incinerate himself with his own fire, Tsukiumi would suddenly come out of nowhere to douse the engulfing flames); however, he continues to think and act as a man even after his body started becoming female (called 'feminization' in the manga). For a long time, he lived under the alias 'Kagari', a popular host club entertainer (because he was looking for an Ashikabi although no matter how many women he met he did not react) and only Asama Miya, Uzume, Matsu and Kazehana knew his true identity.