yea i still bet gleek will probably be an image on a shirt one of them wears or on something near them, maybe even background on their cellphone. As for if they are aliens or krypto freaks/regular metahumans. It will be nice if we get some more dam aliens in the show, heck we have kryptonians, martians, maxima's race, all the phantom zone aliens. Why couldnt we get another. Plus with their ears covered could be a nice hint to fans.