The Sector X Treehouse belongs to Sector X of the KND. It is situated in the center of a very creepy swamp, and apparently has not been well-looked after, as the Treehouse is very worn down. It is known that hot-air balloons float out on the roof allowing the operatives to escape from sudden attacks.
In Operation: U.N.C.O.O.L., Sector X was attacked by Nerd Zombies after Numbuh 42 had stolen a rare Yipper Card from a group of nerds. They invaded their treehouse and took both Numbuh 78 and Numbuh 34 prisoners.
The members of Sector X attended the great annual celebration at the Grand Canyon in Operation: C.A.N.Y.O.N.. Numbuh 78 was standing guard by the highway, Numbuh 34 cleaning out the canyon and Numbuh 42 came for the food.
Their sector was represented by Numbuh 42 at the annual 2x4 Technology convention in Operation: S.C.I.E.N.C.E.. In Operation: A.M.I.S.H., he showed his invention, giant treehouse seeds, to Numbuh 2 before the convention was attacked by Caterpillar Robots.
The Sector X treehouse was in Operation: C.A.R.A.M.E.L. used by Heinrich Von Marzipan to create the Caramelization Circle, and turned all the inhabiting operatives' most valuable qualities into Golden Caramels. After Heinrich's defeat, they were sent word by Sector V on how to reverse the effects of the Caramelization.
|Kids Next Door Sectors|
|Arctic Base • Central Bike Hub • Deep Sea Science Lab • Fake Moon Set • Gihugeacarrier • Hospital • Moonbase • Orbital Ice Cream Storage Facility • Orbital Shipyards • Seriously Cool Museum of Artifacts and Stuff • Super Convention Center|
|Sector A • B • C • D • E • F • G • H • HH • HHH • I • J • K • L • M • N • O • P • PDQ • PHD • P.R. • Q • R • S • T • U • V • W • X • Z|
|Canadian Sector • Egyptian Sector • Florida Sector • German Sector • Greek Sector • Japanese Sector • Mexican Sector • Peruvian Sector • Swiss Sector • Tunisian Sector • Unseen Sectors|