"Wow," Shiranui commented after listening to Liam's episode with the Rockets.  When he heard about the Kommonium Z not fitting Liam's Z-Ring, Shiranui showed Liam his Z-Power Ring with the Mimikium Z equipped.  "I was afraid of that," he replied, "Tapu Koko gave you a standard Z-Ring and some crystals such as the Lycanium Z, the Mimikium Z and the Kommonium Z can only fit into a Z-Power Ring like mine.  You'll have to go back to the professor and get a Z-Power Ring of your own."