Hamidon is the ultimate monster in the game. A giant amoeba that spawns within The Hive (Hero Side) and The Abyss (Villain Side). Between the Hamidon core and its many surrounding Mitochondria, Hamidon is difficult to defeat. Over time specific strategies have evolved that take 30-50 heroes to defeat Hamidon. Defeating Hamidon results in the award choice of a single random Hamidon Enhancement or 53 merits.
The Hamidon was once a zealous scientist named Hamidon Pasalima. Using hideous dark magic and his own genetic genius, he transformed himself into the god-like monster that would spawn the Devouring Earth and threaten the entire world. In a Q&A done by Razer, developer Black Scorpion implied that Hamidon had somehow been able to tap into the Well of The Furies and turned himself into an Incarnate, which could explain his appearance and massive power.
Attempts to defeat Hamidon, generally referred to as Hami Raids, occur regularly on most servers. Since it takes 50+ heroes to defeat Hamidon, these are loosely organized events that bring together many, many heroes, all hoping to acquire a single Hamidon Enhancement.
Over time a basic strategy has evolved for defeating Hamidon. Exact strategy may vary from server to server, but generally it involves several teams of people, and three distinct phases.
For more information, please see Hamidon Raid.