Yohio was born in Stockholm, Sweden on 12 July 1995 and is the son of Tommy Rehn of the Swedish heavy metal band Corroded, and Johanna Eires [REF].
He is the grandson of Jan-Eric Rehn who was a guitarist in 1960s band The Panthers[REF] and the nephew of Chris Rehn of Swedish post-grunge/pop rock band Takida.