History NightmareFuel / DigimonFrontier

** The climax of his character arc has Mercurymon turn into his Beast Spirit form Sephirothmon/Sakkakumon, a mutant Digimon comprised of ten spheres. Initially used to entrap the DigiDestined and engage in psychological warfare throughout the ten areas his spheres are comprised of, Sephirothmon/Sakkakumon soon goes all out on Takuya are toying with him for a bit by manifesting Mercurymon in the Steel Area, the perfect environment for his powers. Bringing Takuya to a cathedral in the Light Zone, Sephirothmon/Sakkakumon produces a copy of Seraphimon's fractal code. After which Mercurymon does of Fusion Evolution with the DNA of the very Digimon he killed with his own attack, becoming ShadowSeraphimon. Not only does this twisted perversion of the Holy Digimon easily beat Takuya as ''both Agunimon and Vritramon=/=BurningGreymon'', he comes close to actually killing Takuya, even conjuring up a coffin to stuff his body into.

** The climax of his character arc has Mercurymon turn into his Beast Spirit form Sephirothmon/Sakkakumon, a mutant Digimon comprised of ten spheres. Initially used to entrap the DigiDestined and engage in psychological warfare throughout the ten areas his spheres are comprised of, Sephirothmon/Sakkakumon soon goes all out on Takuya are toying with him for a bit by manifesting Mercurymon in the Steel Area, the perfect environment for his powers. Bringing Takuya to a cathedral in the Light Zone, Sephirothmon/Sakkakumon produces a copy of Seraphimon's fractal code. After which Mercurymon does of Fusion Evolution with the DNA of the very Digimon he killed with his own attack, becoming ShadowSeraphimon. Not only does this twisted perversion of the Holy Digimon easily beat Takuya as ''both Agunimon and Vritramon/BurningGreymon'', he comes close to actually killing Takuya, even conjuring up a coffin to stuff his body into.

** The climax of the Mercurymon arc has Mercurymon nearly killing Takuya and stuffing his body into a coffin.

* The state of the Digital World due to all the data being stolen to fuel Lucemon's resurrection. It looks like a fruit with multiple bites taken out of it and eventually corrodes into nothing but a black void near the end of the series. Worse is Luceman planned to do the same to the Earth.

* Lucemon's voice actor in the English dub voiced Izzy in season 1 and 2. For anyone that grew up with those two seasons, they'll recognize that voice anywhere when they hear it in any other character in the later shows. But with Lucemon, they go even further, giving him a more evil tone that's very disturbing. You're basically listening to an evil Izzy at this point and he's ready to blow up entire portions of the Digital World to make all Digimon and likely even ''humans'' his slaves. His Japanese voice actor is also the same one as '''that'' [[Manga/DragonBallZ Freiza]], another monstrous maniac with an obsession of blowing entire planets.

* Lucemon's voice actor in the English dub voiced Izzy in season 1 and 2. For anyone that grew up with those two seasons, they'll recognize that voice anywhere when they hear it in any other character in the later shows. But with Lucemon, they go even further, giving him a more evil tone that's very disturbing. You're basically listening to an evil Izzy at this point and he's ready to destroy the world for fun.