Other references - The Desolate Guardians: Part 2, "I think I may have somehow missed the end of the world... (Part 3)"
First encountered by unnamed hunter and [[The Author]] (in his 'MikeHunter' personality) and [[Mike]] by accident while travelling through an inter-dimensional pocket universe, by emerging into a parallel version of their own universe. Identified by white signs nailed to apartment doors with red writing stating GLORWOC.