#1 — Typhon
The undisputed most powerful creature in Greek mythology. Typhon had a hundred dragon heads, each breathing fire. He was so terrifying that all the Olympian gods except Zeus and Athena fled to Egypt and disguised themselves as animals. Zeus needed every thunderbolt he had to defeat him, and even then it was the closest fight the king of the gods ever faced.
#2 — The Hecatoncheires
Three giants, each with a hundred hands and fifty heads. They could hurl a hundred boulders simultaneously. Their intervention in the Titanomachy was what finally tipped the war in the Olympians' favor. Without them, Zeus would have lost.
#3 — Python
The enormous serpent that guarded the Oracle at Delphi before Apollo slew it. Born from the mud left by the Great Flood, Python was so massive it could coil around the entire mountain of Parnassus.
#4 — Ladon
The hundred-headed dragon that never slept, coiled around the golden apple tree in the Garden of the Hesperides. Only Heracles managed to get past it — and some versions say even he couldn't kill it, needing Atlas's help instead.
#5 — The Hydra
Cut off one head, two grow back. The Lernaean Hydra also had poisonous breath and blood so toxic it could kill on contact. Heracles needed his nephew Iolaus to cauterize each stump to stop the regeneration.
#6 — Cerberus
The three-headed guard dog of the Underworld. Only two heroes ever got past him — Orpheus (with music) and Heracles (with brute force). Every other soul that entered the Underworld stayed there.
#7 — The Chimera
A fire-breathing hybrid with a lion's head, goat's body, and serpent's tail. It terrorized Lycia until Bellerophon, riding Pegasus, drove a lead-tipped lance into its throat.
#8 — Scylla
A six-headed sea monster that plucked sailors from ships passing through her strait. Even Odysseus, the greatest sailor in mythology, lost six men to her. There was no way to fight her — only to survive her.
#9 — The Colchian Dragon
The sleepless serpent that guarded the Golden Fleece. Jason only defeated it because Medea used magic to put it to sleep — no hero could have beaten it in combat.
#10 — The Nemean Lion
Its golden fur was impervious to all weapons. Arrows bounced off it. Swords couldn't pierce it. Heracles had to strangle it with his bare hands and then used its own claws to skin it — wearing the pelt as armor for the rest of his life.