Yin-Yarn is the main antagonist of Kirby's Epic Yarn.
Kirby's Epic Yarn
Yin-Yarn first appeared in Kirby's Epic Yarn - Episode 1. During the first cutscene of the game, he turned Kirby into yarn and cast him into Patch Land. In Kirby's Epic Yarn - Finale, Yin-Yarn transformed into Mega Yin-Yarn, but he was defeated by Kirby (with help from Meta Knight) bringing peace to the land.
- Yin-Yarn is the first final boss Chugga's fought who is made of yarn.