sentences:  Merchandise has been created for the character, including action figures, cosplay pieces and resin and ceramic statues.When Inagaki was planning the "Eyeshield 21" series, he wanted to create a "protagonist that was wimpy at the beginning, yet could perform outstandingly in a sports game"; from this premise, he choose American football as the main theme, eventually creating Sena.Inagaki has said that he is a fan of the St. Louis Rams and Marshall Faulk (a running back on the Rams).