Archie's Weird Mysteries

Archie's Weird Mysteries is a French-Canadian-Belgian-American animated television series based on the characters by Archie Comics. The series premise revolves around a Riverdale High physics lab gone awry, making the town of Riverdale a "magnet" for B-movie style monsters.

I Was a Teenage Vampire
The second episode in the Vampire trilogy; Scarlet’s vampire friend Nilnewz turns Veronica into one just as soon as Archie arrives on their dinner date.

Halloween of Horror
The final episode in the Vampire trilogy; Medlock the master vampire was made into a feeble old vampire and Scarlet promised to take care of him. Medlock, however, decided to regain his strength by draining Scarlet of her youth and going to face Veronica, the chosen one. Veronica is hosting a Halloween party at her mansion which Medlock attends; Smithers, Veronica's butler, lets Medlock in and is turned by him into a vampire off camera. Medlock then bumps into Reggie, wearing a werewolf mask; Reggie talks to Medlock, thinking he's a normal guest; Medlock reveals he's a vampire and then turns Reggie into one. Reggie approaches Veronica in his werewolf; when Veronica removes it and sees Reggie has become one of them. Reggie introduces Medlock and then tries to grab Veronica; Veronica crowns Reggie with a jack o'lantern and send him to Medlock. Veronica tells everyone to get out, which they do leaving only the Archie gang with the vampires. When Archie, Veronica, and Betty go to the kitchen to get garlic, they find Smithers becoming one of them waiting, Smithers tries to get Veronica, but gets hits with garlic water by Archie, which causes Smithers to itch and fly out the room. When they open the door to main room, Betty gets snatched by Reggie and taken to Medlock; Betty does quip against the vampires but becomes one. Reggie, Medlock and Betty look but can't find Veronica; Smithers brings Archie to Medlock and Medlock leaves with Archie as leverage for Veronica to bring Medlock the Sunstone. Veronica and Jughead find Dilton hiding under a table and the three go to Medlock's base. They enter to find Archie sitting in a chair asleep, Archie wakes up and reveals he's been turned into a vampire. Medlock and the other vampires come down from the ceiling and take on the trio; Jughead is split off and becomes one, then Dilton is backed into Reggie who turns him into another. Veronica is surrounded by all the vampires, who jump on her and turn her into a vampire. Medlock, thinking he's fulfilled the prophecy, admits when he sees the sun coming up. He then realizes along with Scarlet that Scarlet, not Veronica, was the chosen one; Scarlet takes hold of the Sunstone and pulls the curtain and destroys Medlock.