On the August 13, 2018 episode of "Raw", Ambrose returned to assist Rollins against an attack from Drew McIntyre and Dolph Ziggler, also debuting a new look consisting of a short haircut, a full beard, and a noticeably more muscular physique. Six days later, he assisted Rollins in winning the Intercontinental Championship at SummerSlam. The following night on "Raw", Ambrose and Rollins aided Universal Champion Roman Reigns in attacking Braun Strowman when the latter attempted to cash-in his Money in the Bank contract, once again reuniting The Shield. At Hell in a Cell, Ambrose and Rollins were unsuccessful in defeating Ziggler and McIntyre for the Raw Tag Team Championship. In October, The Shield defeated Ziggler, McIntyre, and Strowman at Super Show-Down. Two nights later on "Raw", they were defeated by the same trio in a rematch. After the match, a frustrated Ambrose walked away from his teammates.