Woo[1] (ウー, Ū) is a strange supernatural Kaiju that watched over the snow capped Phantom Mountain, seemingly protecting an orphan girl. After several attempts were made at the girl's life, Woo began to rampage about the mountain and Ultraman intervened. Woo only stopped after the orphan girl succumbed to the cold after being chased by local huntsmen.
A second Woo, this time representing the spirit of a young girl's deceased father, emerged in the mountains of Japan to fight the Terrible-Monster Iceron several years later. Though Iceron proved too strong for him, Woo II's fight wasn't for nothing, as it gave Ultraman Ace a chance to step in and finish the fight.
Subtitle: Legendary Monster (伝説怪獣, Densetsu Kaijū)