- Generally, whenever there's a nightmare sequence, the music and animation make it scarier than in the comic books.
- The fakir with Hypnotic Eyes in "Cigars of the Pharaoh". He gains a Voice of the Legion when hypnotizing Tintin.
- "The Seven Crystal Balls": The archeologists who found the mummy of Rascar Capac (which is scary in itself, especially since it's animated this time around) have been comatose since the Crystal Balls attack. Their skin has turned bluish (while it kept a normal color in the comic book) and they only wake up to horrifyingly scream in pain (while they only writhe about in the comic books and in the 1969 Temple of the Sun film by Belvision). Like in the comic book, it's revealed that they are tortured with dolls at long distance by a remnant of Inca civilization.
- "Tintin in Tibet": The comic book doesn't quite convey how bone-chilling the Yeti's growls are in the cold night. The episode absolutely does, with echoes in the mountains and mixed with the cold wind's sound. No wonder the carriers run back home as soon as they can (upon seeing the beast's big footprints the next day, that is). Then there's Tintin's encounter with the beast.
- The track "Land of Thirst" may start off alright with a vaguely arabic ambiance, but it gets very unnerving after a dozen seconds, it really gives off a suspenseful vibe, a sense of danger lurking, with a high-pitched, sustained pad, ghastly synths, droning bass and tenseful piano.
Nightmare Fuel / The Adventures of Tintin (1991)