* ''NightmareFuel/TheClueFinders3rdGradeAdventuresTheMysteryOfMathra''
* ''NightmareFuel/TheClueFinders5thGradeAdventuresTheSecretOfTheLivingVolcano''
* ''NightmareFuel/TheClueFinders6thGradeAdventuresTheEmpireOfThePlantPeople''
* ''NightmareFuel/TheClueFindersReadingAdventuresAges912MysteryOfTheMissingAmulet''

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* [=LapTrap=]'s EvilTwin in ''The Mystery of Microsneezia''. He's as cruel and violent as [=LapTrap=] is meek and gentle, kidnapped Joni's uncle and [=LapTrap=], impersonated the latter and subjugated an entire island. And if it hadn't been for [[spoiler:[[MundaneSolution Leslie's bubble gum being a cure for the disease caused by the plants on the titular island]]]], [[NearVillainVictory he would have won.]]
* The moment in ''Search & Solve Adventures'' when Santiago and Leslie are caught using the red video phone by Mimi, as she was previously shown to be a cruel person through the way she treats the robots she's got working for her. Santiago sounds genuinely concerned about her reaction when he [[BlatantLies tries to claim they're not talking to anyone]] and had she wanted to hurt them, neither Leslie nor Santiago are particularly equipped to fight back against someone who wants to harm them let alone an adult (as Leslie's only combat skill involves a slingshot, which she didn't have and wouldn't have been useful in close combat anyway, and Santiago is a total NonActionGuy).