Quote Originally Posted by ,,, View Post

There sort of is a reward for saving him. He gives you a hint about getting the Pallidor esper. If he weren't alive to say "come back with your friends," most people (not using a guide) would never go back to the island and wouldn't find the esper.
If I remember correct, he doesn´t even mention anything about Palidor. I have saved him once and I was expecting hint about Palidoer but no. By the way I actually did find Palidor on my own without any guides on my first completed playthrough.