Quintara Marathon #1: The Demons at Rainbow Bridge by Jack L. Chalker

THREE UNIQUE EMPIRES – THREATENED BY THE DISCOVERY OF ALTERNATE LIFE
The Exchange are consuming the universe’s resources through the powers of their cybernetic leaders.

The Mycholians are parasitic beings who, like a virus, can invade and take over other life forms.

The Mizlaplan are a brilliant, long-lived race who will use any means possible to spread the word of the Cosmic All.

These three empires, maintaining a delicate balance of power, have very little in common – except a strange, recurring legend of horned demon. Now, a shocking event will change their lives forever: the discovery of two horned creatures, seemingly lifeless and perfectly preserved…