She has made occasional appearances alongside the rest of the Teen Ninjas, but was never given any crucial roles. In Operation: M.A.U.R.I.C.E. (her only speaking role to date), she is shown inviting Maurice to the teen's pep rally and is described as "super cute" by Numbuh 4, much to Numbuh 5's anger as she had a crush on Maurice. She is later present in the aforementioned pep rally, where she berates Cree after the latter's plan was foiled by Maurice. She makes a brief cameo in Operation: S.I.T.T.E.R. with all the other teenage babysitters shown and in Operation: P.A.R.T.Y. dancing with Chad Dickson. She is voiced by Jennifer Hale.
- Stacey appears to be high up with the Teen Ninja's hierarchy, openly berating Cree and dating Chad Dickson.