Sefirot (セ フ ィ ロ ス?) Is a fictional character and main antagonist of the role-playing video game Final Fantasy VII developed by Square (now Square Enix). The character designer, Tetsuya Nomura, conceived and designed Sephiroth as an antagonist, and direct opposite, of the main character of the game, Cloud Strife. The character was voiced in Japanese by voice actor Toshiyuki Morikawa and in English by both Lance Bass in Kingdom Hearts and George Newbern in all subsequent appearances, and will be voiced by Tyler Hoechlin in the Final Fantasy VII version.Sefirot (セ フ ィ ロ ス?) Is a fictional character and main antagonist of the role-playing video game Final Fantasy VII developed by Square (now Square Enix). The character designer, Tetsuya Nomura, conceived and designed Sephiroth as an antagonist, and direct opposite, of the main character of the game, Cloud Strife. The character was portrayed in Japanese by voice actor Toshiyuki Morikawa and in English by both Lance Bass in Kingdom Hearts and George Newbern in all subsequent appearances, and will be voiced by Tyler Hoechlin in the Final Fantasy VII version.