Yamata no Orochi
Mentioned in the Kojiki, Japan's oldest book, Yamata no Orochi was a very big Japanese dragon with eight heads.
In Japanese, "eight" sometimes means "many," so Yamata no Orochi may have had "many" heads.
Its eyes were as red as cherries, and its belly was always covered in blood.
Pine and cypress trees grew on its back, and it was so immense that it covered many hills and valleys.
The warrior Susanoo slayed the dragon by getting it drunk on sake and then cutting off all its heads.
In doing so, he saved the princess Kushi'inada, who otherwise would have been sacrificed.
She was the last of eight daughters, all the rest of which had already been eaten by Yamata no Orochi.
Susanoo (alternately spelled Susano'o, Susa-no-O, or Susanowo) took a sword which was found in one of the dragon's tails, called Kusanagi-no-Tsurugi, which eventually was passed down from generation to generation, becoming one of the three Imperial Regalia of Japan.
Along with Yofune-Noshi, Yamata no Orochi is one of the few eastern dragons seen as an evil monster.
XXX
Source - http://www.draconika.com/famous.php
Image - all-ths-nerd-shit.tumblr.com