The stats are all the same for the cross overs
And the alpha rot is NOT the zombie dragon, C.R.A.P AI is Zombie Dragon
Here are a few I know from my memory
Ultra Loroc=Urouko Maneater
Ultra Mutant=Ghislandi
Reaver=Schlact Wolf
C.R.A.P AI= Zombie Dragon
Betty=Grim Executioner with Torrent of Flame
Blood Queen=Sehkmet with Rush
Horde Chieftan=Fafnir
Big Rig=Drake (the mounted one)
Back Breaker=Radon with a stupid skill
Marcus (the legendary) = Talos with 2 multi attack skills