The 5-foot-9, 202-pound Walton, who suffered a season-ending ankle injury in 2017, showed he is healthy by participating in the NFL Scouting Combine, where he posted a time 4.60 seconds in the 40-yard dash.
As for his initial role in Cincinnati, Walton is likely viewed as a complementary player in the Bengals' backfield.
"I really, really like Mark Walton," NFL Network analyst Bucky Brooks said. "I like him, I thought he was an efficient player. He's a guy that is tough, he's physical, he's wired the right way.
On his collegiate career, Walton posted 1,995 yards and 26 touchdowns on 394 carries, adding 624 yards receiving and two touchdowns on 56 catches.
NFL.com senior analyst Gil Brandt had Walton ranked as the 117th player in the draft.