Yin-Yarn is the chief antagonist and final boss of the video game, Kirby's Epic Yarn.

Although an unusual creature Yin-Yarn is nevertheless incredibly powerful and split the realm of Patch Land into seven parts while also causing chaos in both Patch Land and Dream Land via transforming people into yarn and creating many yarn monsters in order to prevent Kirby from undoing his evil alterations of reality.

Yin-Yarn sought to conquer the universe (or at the very least Patch Land and Dream Land) - wasting no time in manipulating and abusing others in order to do so, he was also a powerful sorcerer: which was how he was able to achieve so much chaos to begin with.

In the end, Kirby fought Yin-Yarn and destroyed him. However, his knitting needles revived him as Mega Yin-Yarn. However, Meta Knight transformed Kirby into a Tankbot, who shot missiles at Mega Yin-Yarn and destroyed him for good before he and Prince Fluff threw the knitting needles into the distance.


  • Yin-Yarn being revived in a more powerful form also happens with Myotismon from Digimon.
          Kirby Villains

Main Villains
Drawcia | King Dedede | Lord Nightmare | Magolor | Marx | Yin-Yarn

Dark Matter
0 | | Dark Matter Blade | Miracle Matter | Dark Nebula | Dark Crafter | Void Termina

Meta Knight | Captain Vul

Mirror World
Dark Mind | Dark Meta Knight | Shadow Dedede | Dark Taranza | King D-Mind

Squeak Squad
Daroach | Spinni | Storo | Doc | Squeakers

Skull Gang
Necrodeus | Skullord

Sectra Clan
Queen Sectonia | Taranza

Haltmann Works Company
President Haltmann | Susie Haltmann | Holo Defense API | Mecha Knight | Security Force | Star Dream

Jambastion Cult
Hyness | Jambastion Mages | Francisca | Flamberge | Zan Partizanne | Void Termina

Kirby: Right Back at Ya!
King Dedede | Escargoon | Nightmare Enterprises | ENeMeE | NME Salesman | Octacon | Dedede Stone | Slice n' Splice | Urameshiya | Susshi | Imohmushii | Yamikage | WolfWrath | Ice Dragon Robot | Monsieur Goan | Hardy | Fire Lion | Cobgoblin | Erasem | Masher | Fridgy | Particle Ghost | Domestic Servant Robot | Flame Feeder | Denjaa | Windwhipper | Togeira | Belly Buster | Teacher Creature | Crab | Sirica | Kirisakin | Max Flexer | Masher 2.0 | MT2 | Delivery Man | SlicerDicer | Ozone Hole Monster | Ebifryer | Crowmon | Fang | Rip | Turbo | Whippy | Demon Frog | Heavy Anaconda | Honker Stomper | Zako Demon Beasts

Doomers | Galacta Knight | Grand Doomer | Kracko