They operate in secret, sabotaging "mandatory fun days," rewriting zoning laws to allow for treehouses, and protecting children's lemonade stands from health inspectors. They are not kids anymore. They are not villains. They are – the ones who remember what it felt like to believe that a cardboard box could be a spaceship.

The show's central theme of youthful rebellion resonated with kids, but its sharp writing and clever characterizations have allowed it to transcend age boundaries. As adults, viewers can appreciate the nuances of KND's clever storytelling, humor, and the clever ways in which the show tackled complex issues like conformity, authority, and the struggle for individuality.

Numbuh 2—Hoagie Gilligan—was an aerospace engineer. He built things that flew, but they were boring. Passenger jets. Cargo drones. His dreams were filled with sketches of intricate, ridiculous machines—submarines made of trash, guns that shot gumballs—but he never wrote them down. He had a reputation to maintain. He was a serious man with a serious salary.