The Delightfulization Chamber is a device that permanently turns any child that is subjected to it into a "perfectly-behaved" zombie child who is completely obedient to all adults.
The unstable machine had a much stronger effect than a "normal" Delightfulization Chamber. When the machine blew a fuse, its power increased by about eleventy billion-fold (in Father's own words), resulting in the creation of the Delightful Children From Down the Lane and destroying the chamber in the process. Subsequently, the effects of the Delightfulization were made permanent (as confirmed by Lenny and Numbuh 0 in Operation: Z.E.R.O.).
Afterwords, only less powerful versions of the machine are seen in the series.
Delightfulization Chambers are only seen in Operation: B.U.T.T. and The Grim Adventures of the KND. In the latter, Billy is subjected to delightfulization while wearing his father's "lucky pants" and carrying the Grim Reaper's scythe, resulting in the creation of the Delightful Reaper.
No other children are known to ever have been successfully delightfulized.
In Operation: D.A.T.E., the DCFDTL used a device similar to the Delightfulization Chamber, to delightfulize the guests, so that they could have a delightful army to control. They planned to use that army to get rid of the KND once and for all, but the effects wore off after Nigel took pictures of them with Lizzie's bright camera, because the camera flash reflected the effects of the delightfulization device.
Known Delightfulized Children
- Despite supposedly causing complete obedience, The Delightful Children from Down the Lane have been shown to disobey Father on multiple occasions, most notably in Operation: Z.E.R.O. when they deliberately disobeyed a direct order from Father and attempted to attack Nigel Uno, and even pushed Father down after the order was given.
- It may give some immunity animalization ray, take into account that the chamber that altered them might have altered their DNA slightly so that the ray could not recognize them as KND operatives at first until Tommy put the their boogers back into the C.O.D.E. M.O.D.UL.E..