Teenage Hideouts are bases for Teen Ninjas, similar to the Kids Next Door Organization's treehouses, which are all based beneath Mini Marts. Its only appearances were in Operation: P.A.R.T.Y. where Cree was contacted by the Delightful Children about their plans and later fully shown in Operation: T.R.E.A.T.Y. where Chad Dickson takes Numbuh 1 to one of these bases in order to find something that would break them free from their hand cuffs, but they were caught and chased out by the teens.