Best answer: http://cd.textfiles.com/cream/cream23/doom/cybrdmon.zip
Second best answer: Index of /cream/cream23/doom as this gentleman was a Doom-freak who ported stuff to Quake like a madman.
Should you be interested in Doom monsters in Quake you should check out (yes the Doom monsters are not pictured, but those are spoilers and you should not be allowed to view the surprises without playing the map artists work and JPL is among the 5 best base-map level designers we have ever seen in Quake -- and if you like Doom monsters and Quake and superb futuristic level design this one is for you):
event.zip - Event Horizon by JPL in the Quake map archive at Quaddicted.com

This high quality single player release earned a 16/20 critic's score (from a critic --- underworldfan --- who was damn stingy with the points, 12/20 meant quality). And Baker is withholding information like usual, but this is a damn awesome single player release if you like Doom. (What is Baker withholding? Hahaha ... only me and the zombies shall know ... that's what!)
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