The DNK Treehouse is owned by the Destructively Nefarious Kids. It is the opposite of the Sector V Treehouse in the positive universe. Unlike the cheery exterior of the Sector V Treehouse, the DNK's treehouse is covered with black metal and marked with each operatives' negative numbuh to denote where each one attacks from. This appearance, coupled with the forever-darkened sky of the negative world, serves to give the DNK's HQ a very nasty and intimidating look. The treehouse seems to be made of metal, while the KND treehouse is mainly made up of wood.