Codename: Kids Next Door Season 2 Episode 7

In "Operation: G.H.O.S.T. (Ghostly Hamsters Overwhelm Spooky Treehouse)", Numbuh 3 mourns the loss of one of the hamsters in the treehouse, which is, that night, overrun by the spirits of other deceased hamsters that kidnap Numbuh 3 and drag her away to their afterlife! In "Operation: F.U.G.I.T.I.V.E (Facing Unpleasant Girl's Insulting Taunts Isn't Very Enjoyable)", the KND is forced to side with a grumpy operative, Decommissioning Officer Numbuh 86, to bring in an operative who has reached his/her thirteenth birthday.