Richard Sherman is a big Harry Potter fan, and got into the Halloween spirit during a Seattle Seahawks press conference this week.

Sherman wore a full Harry Potter outfit to meet the media. He rocked Gryffindor robes and Harry Potter theme music accompanied him as he walked to the podium.

Why did Sherman do this?

His son wanted him to.

Sherman told reporters his son asked him to wear something for Halloween, and the cornerback didn't disappoint.

And I saved perhaps the best part of this tale for last, Harry Potter author J.K. Rowling caught wind of Sherman's attire, and the writer approved.

(Don't ask me who plays for them apart from R Sherman.)

— J.K. Rowling (@jk_rowling) October 27, 2016