Undisputed's The Iron and Steel Pack brings legendary brothers Wladimir “Dr. Steelhammer” and Vitali “Dr. Ironfist” Klitschko, along with five additional fighters including Jai Opetaia, Román “Chocolatito” González, Juan Francisco Estrada, Shannon Briggs, and Eric “Butterbean” Esch. Plus, six brand new sets of ring attire for the current roster.
