History Main / MonsterProgenitor

* ''Manga/DemonSlayerKimetsuNoYaiba'': Muzan Kibutsuji, he's the original demon, created the other demons(in fact the only capable of creating other demons), though he states that he actually hated doing it, but had to in order to find either a demon that could withstand the sun or the main component in the elixir that made him a demon in the first place.

* In ''Manga/MahouSenseiNegima'', it is implied that Evangeline may be one of these. She's been around for centuries, has none of the classic weaknesses of vampires, was not bitten by another vampire, but transformed [[spoiler: in an experiment by the Lifemaker]], is capable of transforming people into her type of vampire, and has been identified as being of a specific race of vampire.

* ''Franchise/TheElderScrolls''

* ''VideoGame/SuperSmashBros Brawl'': Most of the enemies that appear in the Subspace Emissary mode are made of Shadow Bugs extracted from Mr. Game & Watch's body.

** ''TabletopGame/{{Planescape}}'': The roguge Baernaloth Apomps is the progenitor and deity of the gehreleths or demodands, a race of fiends unique to the plane of Carceri. It was his creation of these chaotic beings that led to conflict with his fellows in the first place, as the other baernaloth are obsessed with the purity of the NeutralEvil alignment.

*** In the boxed set ''Castles Forlorn'', it's suggested that Tristan [=apBlanc=] may be this trope for the race of living monstrous humanoids called "vampyres", by way of his half-human daughter. Elsewhere in the Core, Doctor Heinfroth is the progenitor of the cerebral vampire strain of undead.

** [[spoiler:Fredbear, the animatronic that was involved in the first fatal accident (due to a prank that ended up in tragedy) in the history of the Freddy's pizza joints, also count as one, even tho there are no elements to think that Fredbear itself was something more than a simple not-haunted, not-programmed to kill animatronic at the time. However, this didn't prevent Fredbear to kinda become the ultimate boogeyman in a game that is practically made of several dozens boogeymen already]].

* In ''Manga/TokyoGhoul'', When Ken Kaneki ate [[spoiler:the entire Oggai unit, he transformed into a horrific monstrosity known as the Dragon. While in that form, he spawned a savage race of humanoid creatures known as the Dragon Orphans, that eat any living thing they encounter, be it Human or Ghoul. They remained a threat to Tokyo, even after Ken returned to normal, and ironically, they were a key factor in uniting both peoples, against a common enemy]].

* In ''VideoGame/StubbsTheZombie'' you play as PatientZero of a zombie outbreak. While most of the zombies Stubbs creates are the normal shambling kind he's marginally more intelligent and gradually obtains a rather disgusting array of special abilities.

* ''ComicBook/BuffyTheVampireSlayer'': Inverted in season 10. Dracula is not the original vampire, but he is most universally-recognised one. However, Xander writes in the Slayer Handbook (a book that makes anything written into it reality) that Dracula is "the most powerful of all vampires". This results in Dracula transforming into the Old One Maloker, the real progenitor of vampires.//////////////////

** We also have General Sontar (of whom the Sontarans are all clones), Jamie (PatientZero of the "Empty Child" gas-mask zombie plague), and [[spoiler:TheMaster (founder of the "Master Race").]] The last surviving Racnoss ''tried'' to become this and recreate her species, but the Doctor killed all her babies.

* ''ComicBook/BuffyTheVampireSlayer'': Inverted in season 10. Dracula is not the original vampire, but he is most universally-recognised one. However, Xander writes in the Slayer Handbook (a book that makes anything written into it reality) that Dracula is "the most powerful of all vampires". This results in Dracula transforming into the Old One Maloker, the real progenitor of vampires.

** Demons in the show come from two separate bloodlines. Lilith was the first demon, being a human soul that [[{{Satan}} Lucifer]] personally twisted as an act of defiance against God. The biblical Cain was the other progenitor, who was given the [[MarkOfCain mark]] by Lucifer after it had twisted the latter's mind. It had a similar effect on Cain, who committed suicide to escape it's effects, but the mark resurrected him as a demon.

** Lilith was the first demon, being a human soul that [[{{Satan}} Lucifer]] personally twisted as an act of defiance against God.

* ''Series/AgentsOfSHIELD'' has [[spoiler:Hive]], who is implied to be the first Inhuman that the Kree created.

* ''Series/{{Werewolf}}'' is based on the premise of a man hunting down the werewolf who bit him to kill him and end his curse.

** The first mortal to transform into a [[OurLichesAreDifferent lich]] was Mannimarco, a powerful [[OurElvesAreBetter Altmer]] {{necromancer}} and ImmortalitySeeker. By being the first, he naturally paved the way for others to follow in the same path.

{{Dracula}} is very often made into the Monster Progenitor of all vampires, as are [[BiblicalBadGuy Abrahamic baddies]] like Myth/{{Lilith}} and [[TheDescendantsOfCain Cain]].

* In ''Manga/TokyoGhoul'', When Ken Kaneki ate [[spoiler:The entire Oggai unit, he transformed into a horrific monstrosity known as the Dragon. While in that form, he spawned a savage race of humanoid creatures known as the Dragon Orphans, that eat any living thing they encounter, be it Human or Ghoul. They remained a threat to Tokyo, even after Ken returned to normal, and ironically, they were a key factor in uniting both peoples, against a common enemy]].

* Myth/{{Lilith}}, Adam's first wife in Jewish mysticism, bred with demons and spirits of the earth and air and thus birthed the lilim, a race of half-demon, half-humans.

!!Live Action TV

* ''Literature/{{Dracula}}'': In the original book, Dracula is the progenitor of ''his'' line of vampires, but not if he is the first vampire ever.

* FanFic/ProjectDarkJade: In both ''FanFic/QueenOfAllOni'' and ''FanFic/QueenOfShadows'' (co-created by the same authors), the Shadowkhan originated when Kagehime, the daughter of Izanami and the lord of the Underworld, escaped to the surface world. Seeing her shadow for the first time (as there's no light in the Underworld) and mistaking it for a man, she politely asked it to get her some fruit from a tree that she couldn't reach; touched at her actions, the shadow transformed into the first Shadowkhan, Hiruzen, and all of the species later followed after from the two of them.

** The Wirrn in ''Recap/DoctorWhoS12E2TheArkInSpace'' have a very complicated life cycle and figuring out how it works from the limited evidence is crucial to the Doctor's plan to stop them.The monster progenitor is a Queen who travels through space to find a suitable host. Once she finds one, she lays her eggs inside it, and the larva eventually hatches, consumes the host and goes on the move. Through consuming the host, the larva gains its knowledge and some elements of its personality, and it then goes on the move to find further hosts to transform into Wirrn by covering them in slime, causing the resultant creature to have the knowledge of the original host as well as of the further host. As the life cycle continues a "swarm leader" with a huge amount of knowledge is created and is capable of controlling other Wirrn.
** ''Recap/DoctorWhoS38E10TheTimelessChildren'' reveals that [[spoiler:the Doctor]] is this to [[spoiler:''the Time Lords themselves'']], by virtue of the fact that as [[spoiler:the infinitely regenerating Timeless Child]], they are the genetic basis behind the [[spoiler:Time Lords' ability to regenerate]], which was spliced into them and was what allowed them to become [[spoiler:Time Lords]] in the first place. Due to this, when [[spoiler:the Master]] creates an army of [[spoiler:infinitely regenerating Cybermen]], he claims that [[spoiler:the Doctor]] is also this to that army.

** The Wirrn in "The Ark In Space" have a very complicated life cycle and figuring out how it works from the limited evidence is crucial to the Doctor's plan to stop them.The monster progenitor is a Queen who travels through space to find a suitable host. Once she finds one, she lays her eggs inside it, and the larva eventually hatches, consumes the host and goes on the move. Through consuming the host, the larva gains its knowledge and some elements of its personality, and it then goes on the move to find further hosts to transform into Wirrn by covering them in slime, causing the resultant creature to have the knowledge of the original host as well as of the further host. As the life cycle continues a "swarm leader" with a huge amount of knowledge is created and is capable of controlling other Wirrn.