He was born to his mother,Birgit Kämmer (former Germanbadminton player and current sports biology teacher) and father,Roland Kroos (a former professional wrestler and football coach).
Wazalwa nonina, u-Birgit Kämmer (owayengumdlali we-badminton waseJalimane nomfundisi wezemidlalo wezemidlalo wamanje) nobaba, uRoland Kroos (owayengumqeqeshi wezemidlalo kanye nomqeqeshi wezemidlalo).