He played college football for the Michigan Wolverines, winning three consecutive Big Ten Conference titles and a national championship in 2023.

[6] In 2022, Mullings switched from linebacker to running back midseason, largely due to injuries to Blake Corum and Donovan Edwards.

In Michigan's season finale versus rival Ohio State, Mullings converted a big third down pass for 15 yards to Luke Schoonmaker, and help the Wolverines extend their drive and take a two score lead to beat the Buckeyes.

[11] In his first game of the season versus Fresno State, Mullings was Michigan’s leading rusher with a career high 15 carries for 92 yards.

[21] In the last week of the season against Ohio State, Mullings carried the ball 32 times for 116 yards and a touchdown, leading Michigan to a 13–10 win over their arch-rival.

[22] Mullings finished the 2024 season as the Wolverines leading rusher, carrying the ball 185 times for 948 yards with 12 touchdowns, and was named a third-team All-Big Ten selection.

[24] In total, Mullings appeared in 55 games on offense, defense and special teams, earning three career starts (two at running back and one at linebacker).