Momotaro Mikoshiba (御子柴 百太郎 Mikoshiba Momotarou) is a supporting character in the anime series Free! beginning with Free!-Eternal Summer-. He is Seijuro Mikoshiba and Isuzu Mikoshiba's younger brother and a high school student at Samezuka Academy. He is a backstroke swimmer that Seijuro predicts will be the team's "fearsome new face." As of the end of Free!–the Final Stroke– the second volume, he is a third-year student as well as the swim club's captain.