bogeyman : nm (word from ' eat 'and' mitten 'being unidentified).
The croquemitaine is an imaginary character whose children are threatened to frighten them and make them obey. Go to bed or I'll call the croquemitaine!
We also say Father Fouettard or Father Lustucru.
Very severe person who scares everyone.
Play the croquemitaines (or the croque-mittens).
The Croquemitaine (pugalo) is a character widely used in eastern countries in Russia in particular.