Tonteri-Young was born in Finland to a Finnish mother and
Chinese New Zealander father from Hong Kong. From 2009 to 2012, she attended
The Bolshoi Ballet Academy in Moscow, where she learned Russian. During her time there, Tonteri-Young appeared in
La fille mal gardée at the
Bolshoi Theatre and
The Sleeping Beauty and
Le Corsaire at the
Kremlin Ballet.'' At age 16, she got into acting, attending some Shakespeare summer courses at
RADA. She attended
Guildhall School of Music and Drama as a Skinners’ Lawrence Atwell Scholar from 2016 to 2019, and graduated with a Bachelor of Arts. There, she appeared in a few stage plays. Her first on screen role was
Netflix's series
Warrior Nun, where she starred as Sister Beatrice. She has since appeared in a few films, including
Netflix's
Outside the Wire. ==Personal life==