Radon 12

Card back of previously published Radon 12.

 Also known as Red Crystal, due to the  colourisation of the Tidite filter from grey to deep crimson. Clean-up crews at work during the 'Dark Pine' epidemic gave the nickname 'Bloody Mary' to the overworked mechanoid. Often filters would not get changed for several months, and Radon 12s could be found dripping the thick, crystalline material, sometimes trailing for several miles in their programmed journey to eradicate the vicious scion Radon 11.