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 [REF].
In the first adaptation of the Eyeshield 21 manga, a 2003 Jump Festa OVA titled The Phantom Golden Bowl, he was voiced by voice actress Romi Park [REF].