Yan Tsapnik was originally to play Mamay, but was later replaced by Aleksandr Gordon; instead, Yan Tsapnik played Khromulya.
Dmitriy Nagiev's difficult schedule forced, filming to be carried out 12 hours a day, and often around the clock.
Dmitriy Nagiev all of his own stunts.
Some of the scenes were filmed in a real Moscow school, Number 775.
Oleg Taktarov, Aleksey Kravchenko, Vladimir Epifantsev and Nikolay Fomenko--from whom the main character got his name--were other actors considered for the main role.