Nightmare Fuel / Return of Ultraman

• Aki is kidnapped and thrown in a car. To her horror, Ken is run over when he tried to rescue her. Then she sees the true face of the passenger next to her...
• The scene at the beginning of Episode 6, when Jack's time runs out and he just vanishes with a setting sun as a backdrop. His pose and the Background Music made it much worse.
• Bemstar's first scene in Ep. 18. It may have set the stage for the opening of Ultraman Leo Ep. 40, which was even scarier...
• From the same episode, Jack almost bit the dust after his failed stunt (you know the one).
• Goh survives the attack by Black King and Alien Knackle, energy depletion, a crucifixion, and being paraded upside down in space to be accused of cowardice by possessed MAT teammates and the captain, and taken outside to die by firing squad when he returned.
• What Captain Ibuki saw at the end of Episode 31 was not a child!
  • Speaking of which, Goh hearing death threats from such child, which infuriate him to the point that he attacked him/it, incurring the ire of Captain Ibuki. The image used each time this happened was disturbing, too!
• Rokusuke from Episode 25 had been bullied in school. He happened to find one of MAT's guns and was out to prove he wasn't a coward. The problem? He brandished the gun in front of his classmates and his teacher! He did join Goh and Minami in shooting Zagoras, but the sight of a bullied boy brandishing a gun is disturbing after all the school shootings in America. Minami even lets him fire a few shots in the air in the end for Rokusuke to get it out of his system!
• The townsfolk of completely normal humans in Episode 33. They horribly mistreat a boy they think is an alien in disguise despite him having done nothing to provoke them. Go bonds with the boy and discovers he's a completely human orphan and was adopted by a kindly man who really was an alien who'd come to Earth to help humanity but was stricken ill by pollution. What does the townsfolk do? Storm their shanty dwelling in a mob, dragging the screaming boy with intentions to lynch him and then gunning down his adoptive father then the ailing alien pleads for his adoptive son's life. All whilst Go is fighting to protect them and begging the mob to see reason to no success.
• The original Ultraman's Color Timer blinked slowly and steadily, rarely speeding up. Sometimes, in the aftermath of a fight, he would stand up for a second or two with the lingering, echoing sound in the background before flying off. Ultraman Jack's Color Timer, on the other hand, was very loud and blinked very fast from the moment it turned red, increasing the tension and creating a sense of urgency. It seemed like he could run out of energy at any time.
• The shopping center cave-in in Episode 5, which is done for horror with much more at stake in Episode 40 of Ultraman Leo.
• The survivor of Prizma's attack, who was covered in crystal shards.