If you’re unfamiliar, kigurumi are a kind of onesie that typically uses design motifs from animals or mascot characters. Sometimes they have just a hood, but occasionally they have a full-face mask that covers and reshapes the head.
The latter tends to be a little more common in English-speaking communities, but the onesie is still more common worldwide!
Bakugo (from My Hero Academia) in a Typhlosion (from Pokémon) kigurumi is quite fitting. Do you recognize any of the other characters?