|Bench press||145 kg|
|Year||3rd (high school)|
|40 Yard Dash||5.5 seconds|
|Team|| Taiyō Sphinx|
Mamoru Banba (番場衛, Banba Mamoru) is the massive center of the team, Banba is the Sphinx's ace player and captain.
Banba holds the high school record for squats, and is distinguished by his massive physique, complete baldness, and, during the Kanto Tournament, multiple scars on his face. Banba commands a great deal of respect from his teammates and other linemen. He is strong-willed, matter-of-fact, demanding, and not afraid to point out the errors of his teammates. Despite this, he appears to be on friendly terms with the other seniors of the Sphinx.
Banba first demonstrates his abilities by single-handedly beating up the Ha-Ha Brothers when they react to the Sphinx's criticisms of them. This experience drives the three to work harder to defeat the Sphinx's line. While Banba stands strong against Kurita for much of Taiyō's game against Deimon, he is eventually defeated by the Devil Bat Dive on the tying two-point conversion. Banba submits the match against the Nasa Aliens to the Devil Bats, believing them to have proven themselves. Prior to the Kantō Tournament, Banba undergoes harsh training, supposedly due to a harsh defeat at the hands of Seibu. This physically and mentally toughens him, and leaves his face heavily scarred. Unfortunately, this was insufficient for him to stand a chance against the Dinosaurs' powerhouse lineman Gaō. Gaō crushes the new Taiyō line formation, called Tutankhamun's Mask, and eventually Banba is injured to the extent that he must be carried off the field on a stretcher. Shortly afterward, Harao forfeits the game, making him the first quarterback to escape injury against the Dinosaurs.
Banba appears as a spectator at several of the other games in the Kantō Tournament, and later as a helper in the Devil Bats' baseball game prior to the final game in the Tokyo Dome. He trains Kurita by boxing against him, which prepares Kurita to stand up against Gaō longer in the Hakushu-Deimon game. He also appears at the Devil Bat's Kantō championship celebration, and is one of the three to help inflate the balloon for the punishment game. Banba becomes Togano's personal coach in preparation for the Christmas Bowl.
- Pyramid Line - Banba and the other Taiyō linemen create a V-shaped "pyramid" formation, which takes advantage of their heavily-built players. This grants a great deal of protection to the quarterback and is a formidable obstacle when used by the defense. The line's weakness is that it is simplistic and overly reliant on brute force and weight.
- Tutankhamen's Mask - The linemen arrange themselves more tightly together than normal, making the spaces between them narrower and forming closer to the quarterback. This is alluded to the Death Mask of the Pharaoh. In theory, the line was made even more secure and harder for the opposing team to break through to sack the quarterback, but it was still defeated very quickly by Gaō.
- According to Harao, Banba comes from a poor family.
- He is the second-oldest looking player in Team Japan, Gondayū Yamabushi being the first oldest looking.