Zero Star is the final world in Kirby U: The Ultra Jewels. To get there you must get every Ultra Jewel. When you get there you must fight the true final boss. Kirby and Ribbon team up to create Master Kirby, the ability you get when you combine Fairy and Diamond. It is only obtainable during the 02 fight in Kirby 64, and the final fight in Kirby U: The Ultra Jewels. Zero Star is located underneath Matter Star, it has a red eye that only appears after defeating Matterzord. Zero Star is the only star closest to the surface. It is also the only little star that you can go to.
- Zero Star is pretty much the same as Zero from Kirby's Dreamland 3.
- Zero Star's eye is where you fight the final boss.