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

Don't forget that characters like Kirill Gryphon and his two wives, the archangel Sarah and the succubus Zana, are still alive. Also alive are Railag, Murazel, Yorgen, Faydaen, Anwen, and so on.

Added 2 minutes later
And Tieru, in the form of a spirit, can still manifest himself as a mentor to Railag.