Eizzil Enived, a.k.a. Negative Numbuh 49, is a one time character from Codename: Kids Next Door. She is the Negative Universe counterpart of Lizzie Devine and a member of the Destructively Nefarious Kids, working for Eeballaw as one of his most trusted agents. Her whole name is Lizzie Devine spelled backwards. Since she is the opposite of Lizzie, she is very mean and evil. Even though Eizzil is the opposite of Lizzie they are both loud and bossy. She captures her counterpart and poses as Lizzie for Nigel before knocking him out and bringing him to the DNK treehouse. When the KND are sent to the Broccoli Mines, Eizzil has an attack of conscience and helps them escape and defeat her former master. At the end of the episode, Eizzil kicks Eeballaw back into the Negative Universe as he yells at her for betraying him and she hugs Nigel for complimenting her eyes, calling him "Positive Nigie" before he's taken back to the positive world by Lizzie.
- After the events of Operation: G.I.R.L.F.R.I.E.N.D., it could be assumed that Eizzil and Legin got back together.
- Eizzil Enived is reversed for Lizzie Devine.