The 19-year-old man, linked to a Bonnie and Clyde"-like crime spree in April, entered a plea agreement in federal court Thursday.
Corey Fair Jr. agreed to plead guilty to six felony robbery charges.
He was arrested in connection with a string of robberies that began April 6 when he allegedly robbed several South Bend stores, chain restaurants and a cab driver.
Fair faces up to 20 years in prison. He will be sentenced on February 7 of next year.