Quote Originally Posted by Chilingsworth View Post
How much influence do the githzerai actually have on Limbo?
Well, it's Limbo, so influence isn't really quantified in standard fashions; instead, it has to be measured in terms of Zarathustra marshmallow skating dimetrodon ebola virus Cabbage Patch Kid.

They're certainly A Force on Limbo, for whatever that's worth on that plane.

Also, I remember reading about some lawful slaadi they've allied themselves with in an issue of Dragon. Are those (Gremmel, I think?) canonical, and if they are, have they appeared in anything other than that issue of Dragon?
Gormeel, and given that it was an April issue...

They're canonical as far as Dragon ever is, though. As to being used in other materials, I can't recall seeing them.