Dave Lebling introduced a similar monster, whose name was borrowed from Vance's grues, into the interactive fiction computer game Zork. Zork's grues fear light and are ravenous devourers of adventurers, making it impossible to explore the game's dark areas without a light source.

The Monastery's Grue might, IMHO, be a somewhat gentler monster, charged with leading initiates and other newcomers to the light in the likes of How do I post a question effectively?, Markup in the Monastery and company, specifically including those cited by jdporter, above.