Hi,

Is there any online resources which detail some of the alien beasts and monsters either from canon, or creations of the imagination?

I have some ideas, but want to see what anyone else has done....

Maybe we could have a thread here for our attempts?

There is a good amount in the source material.

Maybe you will have some luck here

http://community.fantasyflightgames.com/index.php?/topic/85616-compiled-resources-list/