From Ancient Greece comes The Hydra. Born of two Gods (Typhon and Echidna). This serpent-like creature was said to be over 100 feet long. It possessed many heads, each shaped like a dragon. It's blood was so poisonous and dangerous, that it's mere odor could stop attackers. Further, if an attacker did get close enough to lop of a head, 2 identical ones would instantly grow to replace it. The Hydra lived in Lake Lerna (an isolated island in The Mediterranean Sea). Incredibly strong, it was said no mortal man could slay The Hydra. The hero Hercules (half-God), was given the job of killing The Hydra as part of his quest, The 12 Labors. The Hydra blood (though dangerous), was needed to kill another immortal beast. Hercules (using a Scythe), cut off all heads but one (at the same time). This severely weakened The Hydra so that it could not replace it' many missing heads at one time.
