Comicbook.com reports Yu-Gi-Oh! has generated a lot of memes over the years, particularly for Joey.
Joey's chin has been parodied a lot, and now fans know how the chin itself started.
Yami M! on Twitter said he messaged an animation director of Yu-Gi-Oh! about Joey?s chin.
They admitted it was Japanese wrestler Antonio Inoki who inspired the cleft.
Inoki worked with Tokyo Pro Wrestling between 1966 and 1998.