Just wondering out loud why, when WotC released the d20 SRD, they decided that the mighty Displacer Beast was iconic enough of the D&D experience to not include it?
Mind Flayers, Beholders, I can understand. They scream "This is D&D!!!" I suppose Carrion Crawlers do too, to a lesser extent.
But what about Gelatinous Cubes? Rust Monsters? Or the Displacer Beast's natural enemy, the Blink Dog? They're all in the SRD.
It's not even like the Displacer Beast was an original creation of either Gygax or Arneson anyway. It was ripped off from Voyage of the Space Beagle.
It's just one of those nutty things, I guess. Ryan Dancey or some unknown suit decided that it's fine for 3rd parties to use "The Cube," "Rusty" or disappearing dingos, but tentacled space cats can only be used by them.