Medlock

Medlock is the vampire master who appears in two Archie's Weird Mysteries episodes "I Was a Teenage Vampire" and "Halloween of Horror". When he crashed into Veronica's Halloween party looking for the ender (Veronica), he turned Reggie into a vampire, then Smithers, Betty, and Archie (which would be used as bait for Veronica). The spell must be stopped for destroying him with sunlight.