Ouro Kronii is an English-language Virtual YouTuber associated with hololive. She debuted in 2021 as part of hololive -Council-, the second generation of members of hololive English, alongside Tsukumo Sana, Ceres Fauna, Nanashi Mumei and Hakos Baelz.

Kronii is also a member of unit "hololive English -Promise-" alongside IRyS, Ceres Fauna, Nanashi Mumei and Hakos Baelz.