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?」, buong pangalan, Aquamarine Hoshino「starstarfieldof likeaLongKulikeaseaMarin, Hoshino Akuamarin?」 o mas karaniwang tinatawag na Aqua「アクア, Akua?」, ay ang lalaking pangunahing tauhan at isa sa mga punong tauhan ng Oshi no Ko.

Si Zatz, ang Prinsipe ng mga Paniki, ay ang pangalawang antagonista na kalaunan ay naging pangalawang protagonista sa computer-animated na serye noong 2021 na Maya and the Three. Siya ay isang demigod, mandirigma, dating tauhan ni Lord Mictlan at interes sa pag-ibig at kakampi ni Maya.