Imagine answering your door to this.
This photograph was taken by Redditor /u/subliime. They said; “Almost had a heart attack when I opened the door.”
At least there wasn’t a book to sign.
The tall costume is Ryuk from the anime Death Note. He’s bored Shinigami (death god) who winds up getting mixed up in the human world. It’s a popular anime for all the right reasons but perhaps not a cosplay you’d expect to knock on your door. Not even at Halloween.