During a brief team-up with Captain Cold, Mirror Master was contacted by Brother Grimm about a plan to permanently get rid of the Flash, but when Grimm betrayed Cold and McCulloch by trapping them in a pocket mirror universe in Linda Park's diamond ring, they joined forces with Wally to escape this dimension and confront Grimm's theft of Keystone City, Wally even briefly lending speed to the two Rogues so that they could ensure that Keystone's citizens were all in the city when it returned to Earth while Wally fought Grimm.