John Wick fun fact:
Some might already know this, but his nickname Baba Yaga is a mistranslation. in the film they say it means boogeyman, but it's actually a witch in slavic folklore.
In the german dub however they apparently had someone who's familiar with slavic folklore work on the dub's script, who noticed the error, and actually corrected it.
so in the German dub he is correctly referred to as Babaj, which is the actual slavic equivalent of the boogeyman.
however, they eventually gave up due to the mainstream popularity of the baba yaga nickname, and just also called him that in the german dub starting with the third film I think, as it became part of pop culture.
I'm kinda sad they did, they should have stuck with it to have consistency.