The Red X
The Red X is not really a capper but a running gag between meQal and GlitterRock. Sometimes when posting screengrabs in a gallery the image fails to appear. For Windows users, what appears is a box with a red "X" in it. When this happens, meQal will tease GltterRock by loading up this alternate persona who has even earned the custom title "Wanted for stealing screengrabs". Often the gag revolves around how the missing image is a cameo of the "Mysterious Red X".
The Red X is also an alternate handle for meQal.