Hunter: The Vigil takes place in the same universe as X
- Supernatural: The Loyalists of Thule are Men of Letters (hence their focus on fighting Nazi zombies); the Winchester family and their friends are a cell of the Union or the Bear Lodge; Ghostfacers are involved in Network Zero.
- Small problem with the first one, Nazi zombies are not a focus enemy for the Men of Letter. They were an enemy, just like any other. It's the Juda Initiative that specifically fights the Nazi zombies.
- Buffy the Vampire Slayer: The Loyalists of Thule are the Watchers and the Chiron Group is the Initiative. Also, Maiden's Blood Sisterhood was meant as a Homage to the show.
- Indiana Jones: Aegis Kai Doru is the Brotherhood of the Cruciform Sword.
- Hellsing: The Knights of St. George are the Hellsing Organization, the Malleus Maleficarum are the Iscariot.
- Friday the 13th: the telekinetic girl from Part VII was an undercover VASCU agent, and of course Voorhees is a Mask
- The X-Files/Diogenes Club: VASCU, natch.
- TFV too with the Syndicate.
- Hellboy: Taskforce VALKYRIE is the BPRD. Big Red himself could have been a Lucifuge member if things had turned out differently.
- Chick Tracts: The tracts include vampires, skinwalkers and witches converting. Bob Williams and Lil' Susy are members of The Long Night.
- Special Unit 2:
The Killers from Dead by Daylight as Slashers
- The Trapper:
- The Wraith:
- The Hillbilly:
- The Nurse:
- The Shape:
- The Hag:
- The Doctor:
- The Huntress:
- The Cannibal:
- The Nightmare:
- The Pig:
- The Clown:
- The Spirit:
- The Legion:
- The Plague:
- The Ghost Face:
- The Demogorgon:
- The Oni:
- The Deathslinger:
- The Executioner:
- The Blight:
- The Twins:
- The Trickster:
- The Nemesis:
- The Cenobite:
- The Artist:
- The Onryō:
- The Dredge: