Why does this exist?
Probably just some company deciding to use the Cold war to their advantage and make a product about something barely relevant so that way when children go to the toy store they ask their parents "Can I get this toy because of the pretty unicorn?" And because most Americans are enthusiastic about supporting their country they buy it thinking the Freedom unicorn would beat up the commie one and it would just turn into a huge fight at the sandbox about " I want to be the red unicorn " or vice versa
But that's just what I think.