I just compiled a list (below) of heroes with no Dota 2 information whatsoever.
Ezalor, Slark, Panda, Tauren Chieftain, Roof, Wisp, Bristle, Phoenix, Syllabear, Naga, Troll, Thrall, Techies, Ogre, Rubick, Chaos Knight, Pit, Lycan, Abaddon, OD, Magnataur, Gorgon, Geo, and Shadow Demon.
If anybody has any info on these heroes let me know.
But the one thing I find a bit odd is Lord of Avernus was the very first hero ever to be released in Dota yet there is no trace of him in Dota 2, not even rough cuts of him. He should have been in the Dota 2 international just like Prophet was there
it isn't right i tell you.