RTF is a global modification that replaces all towns in the game.

I thought the lizards lived near Erathia, and therefore the Voidwalker attack should affect them.
The lizards are initially neutral; they live on their own. But maybe the Voidwalker army or chimeras (or whoever else is evil) will pass through their forests. They will fight back. Then someone good will finish off the enemy, and the lizards will form an alliance.

Added 2 minutes later
Name approximately who is good. Because after the empire was defeated, and the Nagas and Elementals became evil, I don't understand who is good.