Letter X. Letter Study. Basic in structure the Xeno Glyph represents the Xenomorphics of the Tenth Planet. Having no true form the Xenomorphics slide and drift in between dimensions never fully gaining a concrete appearance. Sometimes materializing briefly into our dimension on Earth many Homo-sapiens mistake Xenomorphics for dark spirits or demons. Known to feed off the fear of other beings Xenomorphics especially like to prey on the wild imagination of humans.