|First appearance||Skyward Sword (2011)|
The Thunderhead is a location from The Legend of Zelda: Skyward Sword. Found within a mass of thick clouds in the sky, the Thunderhead is a collection of floating islands centered around a thunder and lightning theme. It is here that Levias can be found.
After Link plays the "Ballad of the Goddess" atop the Light Tower, a beam of light is shot into the Thunderhead, creating an opening into the otherwise impenetrable mass of clouds. It is here that Link finds the Isle of Songs, where he returns multiple times to learn "Farore's Courage", "Nayru's Wisdom", and "Din's Power".
Later, on his search for the Triforce, Link brings Pumpkin Soup from Pumm as an offering to Levias. However, the spirit has been infected by Bilocyte, forcing Link to fight him. When Link defeats the parasite, Levias tells him of the "Song of the Hero", which requires four parts: one from each of the Three Dragons and one from himself.
After learning each part of the Song from the dragons, Link returns to Levias, who teaches him the final part.
It is hinted at multiple times in-game that the Thunderhead came out of nowhere and is completely natural.