The Delightful Children From Down The Lane are the villains from Codename: Kids Next Door. They are a group of five obedient children of Father (the main antagonist of Codename: Kids Next Door, a.k.a Benedict Uno, Numbuh 1's uncle) that move and speak in perfect sync, and also the legendary "lost sector" of the KND, Sector Z.
Their known names are: Bruce (short, blond boy), Lenny (helmet boy), David (tall, brunette boy), Ashley (tall, blonde girl, FAN NAME) and Constance (brunette chubby girl).
While carrying Billy to KND Deep Sea Lab, the Sector V receives a message from Numbuh 362 in informing them about a mysterious activity in the Delightful Mansion From Down The Lane, ordering them to go there and despite being on a mission.
When the Sector V arrives at the mansion, seen as the DCFDTL intend to use The Delightfulization Chamber improved by Father to convert all children in lovely obedient kids like them and thus achieve the purpose KND.While the five laughed at his confident victory, Billy interrupts them asking if they could go to the bathroom, referring misled the House of The Delightfulization Chamber. The DCFDTL respond that could get accidentally playing along, but soon realize the intruder, and the five entering the House of the Delightfulization Chamber to bring Billy warning that there is not a bathroom. However, Billy activates the camera and is fused with the DCFDTL because of the Scythe embedded Billy's pants from his father, Harold.