Angeni & Fz of HG send the following report: "Town Crier says to see Nomea ibn Makar in Qalabar.  She tells you to go to Ayan and go to the Lonely Fortress west of there.

Nomea ibn Makar tells you, "Ah, you may be suitable for the task I have at hand. We've received reports that the Virindi renegade Aerbax has endowed a Hea Tumerok with increased intelligence and magical power. You can only imagine what danger this creature would pose if it came to unite the Tumeroks, the way Aerbax's other experiments have tried, yes?"
Nomea ibn Makar tells you, "Please venture to the Lonely Fortress on the western edge of Dereth, north of Ayan Baqur, and see to it that this Tumerok poses us no threat."

The Lonely Fortress portal (level 80+) is at 56.7s  88.4w  Has a bunch of Virindi and Shadows around outside. Inside are more Virindi and Shadows. We went north and just kept going upwards when we could. As you get closer to Rheaga you find Rheaga's Companions which are level 115 smaller sized Iron golems.  Keep going up until you get to Hea Rheaga, a level 120 Uplisted Tumerok. There is a note on the floor to pick up and his journal to read in a side area. 

Text: Rheaga's Journal

Hea Rheaga tells you, "Greetings, human. Have you come to slay me? I have divined, through my vast intelligence and penetrating senses, that a human named Nomea in your shantytown of Qalaba'r wishes me dead. Simply because I am a failed experiment of the meddler Aerbax. I can assure you that I pose no threat."
Hea Reaga tells you, "I have no desire to meet, let alone unite or enslave, m brethren. Nor do I care to wage any kind of war, by arms, sorcery, or guile, against humankind. I have studied enough to know that no good can come of treating with your people."
Hea Reaga tells you, "If you would slay me, be done with it now. I can assure you, death neither fascinates nor terrifies me. I am not particularly attached to the life I have been given."
Hea Reaga tells you, "If you would spare me, merely pick up the note you see before me, and deliver it to Nomea. I am convinced it will convince Nomea of my benign inntent."
Hea Reaga tells you, "BE warned, I will fight back if atacked. I am not completely apathetic, after all. I do possess some survival instinct."

When we talked to him we got the text: Hea Rheaga tells you, "Note or head, it makes no difference to me... Begone, and off to Nomea with you."

We did not kill him and brought the note to Nomea and received the following:

You give Nomea ibn Makar Letter to Nomea.
Nomea ibn Makar tells you, "A very interesting note you've given me here.  I suppose this is enough to confirm that this Rheaga has no interest in uniting his kin for a war against us.  I thank you for your service."
You've earned 20,000,000 experience.
Nomea ibn Makar has granted you the title "Friend of Rheaga"

I don't know what you get if you do kill Hea Rheaga." Thanks also to Kalazar of SC!

Text: Letter to Nomea