Crown Prince Sky is the Crown Prince of Eraklyon. His parents are King Erendor and Queen Samara of Eraklyon. Though his father had voluntarily abdicated as king in Winx Club: The Secret of the Lost Kingdom, he would later be reinstated as crown prince from Season 5 onwards. Sky is also a member of the Specialists, recognized to be their leader by Season 6, and is Thoren's cousin

Aqua Hoshino「starstarfieldof アクア, Hoshino Akua?」, nama penuh, Aquamarine Hoshino「starstarfieldof likeaLongKulikeaseaMarin, Hoshino Akuamarin?」 atau lebih biasa dirujuk hanya sebagai Aqua「アクア, Akua?」, adalah protagonis lelaki dan salah satu watak utama dalam Oshi no Ko.