Æther (ætheric) - The dimension of non-physical energy, the 'spirit-world' (pertaining to the dimension of non-physical energy)

Anti-Thought - Mental constructions so twisted and convoluted that they actually destroy logical thought forms.

Elgibigia - Homeworld of the Elgibigians.

Elgibigians (also known as "greys") - A degenerate and insane race formerly devoted to galactic exploration and science, now devoted to nilhism and the construction of ever more elaborate anal probes.

Half-breeds ('breeds) - Any of a number of disturbing hybrids, usually human crosses, and most likely referring to the products of either the Reptoid or Elgibigian breeding projects.

'Reptoids' - see 'Saurians'.

Saurians (or, in the vulgar parlance, "reptoids") - The ancient reptilian race that once dominated the Earth. Alternatively, the furtive and slightly paranoid modern descendants of that race.