Pavel Derevyanko, Ivan Okhlobystin and Anton Tabakov reprise the voice over roles or live action roles from the animated series Mr Theo, Cat & Dog (2018). Additionally Anton Tabakov's father Oleg Tabakov voiced the same character of Cat Matroskin in the original animated movies Troe iz Prostokvashino (1978), Kanikuly v Prostokvashino (1980) and Zima v Prostokvashino (1984), based on the same stories.