Ethon (the Caucasian Eagle)

Even larger and more powerful than dire animals, behemoth eagles are intelligent and magically fortified

Ethon or the Caucasian Eagle was a gigantic eagle born of the monsters Typhon and Echidna. As punishment for stealing fire from Mount Olympus, Zeus had Prometheus chained to Mount Caucasus, where Ethon was set to gnaw on his liver. The liver would regenerate each night, only to be eaten again by Ethon. Prometheus‘ son Deucalion and his wife Pyrrha would bat off Ethon while they cared for the chained Prometheus. Ethon was eventually slain by Heracles and Prometheus was released.

Ethon was eventually slain by Heracles and Prometheus was released. In some myths it is said that Heracles used a giant rattle to scare away the Ethon forever, while others say he wrestled it to death, or killed it with an arrow.

Source(s) Epic Level Handbook

Behemoth Eagle
	Colossal outsider (Extraplanar)
Hit Dice	21d8+126 (220 hp)
Initiative	+20 (+12 Dexterity, +8 Superior Initiative)
Speed	20 ft., Fly 160 ft. (poor)
AC	24 (+12 Dexterity, -8 size, +10 natural)
Base Attack/Grapple	+21/+44
Attack	Claw +25 (5d10+7) melee
Full Attack	2 claws +25 (5d10+7) melee, bite +20 (4d12+3) melee
Space/Reach	30ft./20 ft.
Special Attacks	–
Special Qualities	Evasion, SR 30
Saves	Fort +18, Ref +24, Will +16
Abilities	Strength 25, Dexterity 34, Constitution 23 Intelligence 17, Wisdom 19, Charisma 16
Skills	Diplomacy +27, Jump +3, Knowledge (Geography, history, nature, religion, the planes) +27, Listen +30, Search +27, Sense Motive +28, Spot +41, Survival +28
Feats	Alertness, Endurance, Flyby Attack, Improved Initiative, Iron Will, Skill Focus (Spot), Weapon Finesse
Epic Feats	Superior Initiative
Climate/Terrain	Any forest, hill, mountains, and plains
Organization	Solitary
Challenge Rating	18
Treasure	None
Alignment	Always neutral evil
Advancement	21-42 HD (Colossal)

Skills *A behemoth eagle receives a +8 racial bonus on Spot checks.

Carrying Capacity A light load for a behemoth eagle is up to 2,400 pounds; a medium load, 2,401-4,800 pounds; and a heavy load, 4,801-7,200 pounds.