Numbuh 4's new pool is actually a portal to an alternate version of the KND Universe where their counterparts known as the DNK (Destructively Nefarious Kids) are evil. The kids do all the adults' job whereas the adults sit around and play video games. While swimming in the pool, Lizzie is captured by an evil opposite of herself, Eizzil Enived (Lizzie's name backwards), and Nigel follows the captor back to her home universe.
| Name | Type | Role | |
|---|---|---|---|
| Mo Willems | Writer | ||
| Dee Bradley Baker | Guest Star | ||
| Tom Kenny | Guest Star | ||
| Jeff Bennett | Guest Star | ||
| Grey DeLisle | Guest Star | ||
| Amber Hood | Guest Star | ||
| Tom Warburton | Director |