Ilya was born in Moscow, USSR in 1991 to Grigori Rozanov and Irina Rozanova. He has one older brother, Andrei Rozanov, who is four years older than him. Grigori had Ilya when he was almost fifty, and Irina was in her twenties. Ilya was raised religious in the Russian Orthodox Church and went to liturgy as a child. He was raised in post-Soviet Russia.
His home life was difficult, with Ilya describing his father as an intimidating, strict, and critical man, who would punish Ilya for assumed transgressions. The two brothers were not close as children. As opposed to these very strained relationships, Ilya was very close with and adored his mother.
Ilya watched his father belittle and abuse his mother for years, describing it as "terrorising" her; as an adult, he speculated that Irina was possibly forced by Grigori or by circumstance into the marriage against her will. He also remembers his father accusing her of cheating and planning to leave him. Irina battled depression without any medical or familial assistance, and killed herself by overdosing on pills in 2003. Ilya was the one who found her body in bed, at only twelve-years-old. Grigori told everyone that Irina's death was an accident — that she had taken too many pills for a headache instead of intentionally taking her own life — and told Ilya to say the same. Ilya now wears her gold cross every day.
