While this series isn't generally known for its Nightmare Fuel, it nevertheless has some ''very'' unsettling moments.
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* What happens to [[spoiler: Mimi]] is absolutely horrifying. [[spoiler: She is kidnapped and taken to a laboratory where her unborn child is forcibly extracted from her, then left to wander the wilderness as her grief slowly drives her insane]].
* The scene where [[spoiler: Takato]] is tortured in front of [[spoiler: his]] friends was one of the most disturbing scenes in the series and one of the first clues towards how much DarkerAndEdgier ''Tamers Forever'' was.
* At one point during ''Silent Sorrow'', [[spoiler: Takato's hands begin to shake uncontrollably, and Ruki explains that this is because his ''brain cells are dying''. That thought right there, that Takato could end up deteriorating into a vegetative state, is horrifying.]]. [[FromBadToWorse It gets even worse later on]], when [[spoiler: Takato ends up completely paralyzed]].
* [[spoiler: Takato after fusing with Chaos is creepy as hell, because you have to wonder if there is even a trace of his original humanity left.]]