|File:Who the heck is the chosen one now??.png|
|Visitors|| All Mixels Series 1-6 (except the Weldos)|
It is located in the same desert that Klinkerton is located in. It is a small place with visible pathways that lead into each other. In the center is a giant keyhole-shaped door that transports the Mixels.
After a long quest, the Klinkers, 2015 Frosticons, Lixers, 2015 Glorp Corp, and Munchos find themselves and all the other Mixels and background Mixels (except for the Weldos) to be there. All of them enter the keyhole door, and it disappears, leaving it just the pathways.
- It is unknown what occupied the area before King Nixel's plan went into action. However, it is known that after, the city of Mixopolis was built on the site of it.
- The majority of the episode, A Quest for the Lost Mixamajig takes place in the desert surrounding it.
- Main article: Mixamajig Threshold/Gallery
Large Rock / Mixel Mountain / Mixel Park / Mixamajig Threshold / Mix Orleans / Magma Wastelands (Volcanoville / Vulk's House) / Mine (Mt. Brushmore / Krader's House / Shuff's House) / Mountain City (Techno Valley / Teslo's House / Electroid Classroom) / Frozen Volcanoes / Farmlands / Sproingy Lands (Party Building) / Swamplands / Spiky Desert / Magic Tent / Klinkerton (Klinkerton Boardroom) / Lixer Land / Weldo Land / Muncholand / Mixopolis (MCPD Station / MCPD Police Academy / Castle / Musicland / MCFD Station / Mixopolis Wharf / Sea Dawg / Mixopolis General Hospital / Mixopolis Middle School / Mixopolis Zoo / Mixopolis Stadium / I-Cubit Building / Mixes / Lava Lounge / Tuxedo Club / Mixopolis Bank / Mix TV Studios / Kid's Club)
Orbitopia (Nurp-Naut's Room) / Glowkie Caves