Valoo is a red dragon that appears at the top of a Dragon Roost Island in The Legend of Zelda: The Wind Waker. He is also the almighty Sky Spirit. When a Rito comes of age, they go to Valoo and take a scale. This is a symbol of growing up and they can grow wings when they do.

Valoo is usually a calm, gentle, and kind dragon, but Ganondorf cursed the mountain with an evil creature that tortured Valoo's tail, causing him to be very angry and mean. You have to grapple onto his tail and swing accross the room to beat this boss, freeing Valoo.

Valoo later burns down Ganondorf's wooden fort in the Forsaken Fortress, and carries Link to safety.

Super Smash Bros. series

Valoo appeared as a trophy in Super Smash Bros. Brawl. The following is his trophy description:

"A spirit of the skies sacred to the Rito people. He lives atop Dragon Roost Island. Adult Ritos receive a scale from Valoo that allows them to grow wings and fly. Usually the friendly type, he becomes enraged when the evil creature Gohma grabs his tail, tethering him. Link battles Gohma and frees Valoo, who expresses his thanks to Link and labels him "The Hero of Winds."