"Hey! Tapioca tush! (...) Catch." - Numbuh 0.2/David
"Well you might want to figure that out, because we're transforming back." - David upon reversion back to delightfulization
David (previously known as Numbuh 0.2) was a member of the Kids Next Door who has now become one of the Delightful Children From Down The Lane.
Like the rest of the Delightful Children, David is most commonly seen wearing a blue school uniform with a gray badge, knee-high socks of the same color, and brown shoes, on top of a white dress shirt and red tie. Unlike Bruce and Lenny, David doesn't wear a pair of shorts but rather a pair of long pants. His eyes are covered by his hair in a similar way to Numbuh 4.
It is revealed in Operation: Z.E.R.O. that the Delightful Children are the operatives of the legendary "lost sector" of the KND, Sector Z, with David as Numbuh 0.2. Along with the rest of the sector, he was captured by Father and placed in the prototype Delightfulization Chamber, which had much stronger effects than intended, Eleventy Billion-fold in fact, and completely destroyed the children's individual identities, creating the hive mind, that is the DCFDTL and destroying the unstable machine.