- The conversation in the bedroom between Haruko and Naota. Her manic mask briefly slips as she continues to ask what's underneath the bandage on Naota's head—she gets more and more intense, creeping closer across the room, and her pupils flash red as she tries to take the bandage off. Naota freaks out and bats her hand away.
- Canti emerging out of Naota's head, complete with Mamimi collapsing from "overflowing" via headache, Body Horror, and fast-paced music.
- Any person infected with N.O. appears to have no brain judging from the X-rays done on Naota's head.
- Turns out that the substance, for some weird reason, actually shields the infectee's brain from being detected by X-rays.
- It also appears that N.O portals push the brain aside into a thin doughnut shape.
- Any time when the 'air raid horn' plays and the song "Advice" follows afterwards, which means that something is about to emerge out of an N.O. infectee's head and the ensuing Body Horror.
- In episode four, the entire scene where Naota ends up smashing the TV. Everything leading up to it is just so jarringly creepy.
- In episode five, although a blink-it-or-miss-it shot, as Haruko flies out of the smoke cause by the giant bullets being shot at her exploding, if you manage to stop at a specific shot◊, you will see her with a Slasher Smile, sharp teeth, and Hellish Pupils.
- The scene with the (fake) Kamon corpse. "Sometimes you're the cat, sometimes you're the mouse."
- The revelation that Haruko was Evil All Along is pretty creepy. Especially when she finds out that Naota absorbed Atomsk before she could and her expression turns to pure rage (pictured above).
- Mamimi can be a pretty damn creepy teen when you add all of the Fridge Horror about her together. Especially during her turn to temporary villainy in the final episode and the exploration of her backstory in episode two.
Nightmare Fuel / FLCL