Miss Bulgravia is the hidden main villainess from "Beauty Contest Caper," episode 3.04a of Scooby-Doo and Scrappy-Doo (airdate October 16, 1982).
Miss Bulgravia is one of seven contestants from the Miss Earth Beauty Contest, and she was shown enlisting the Fearless Detective Agency (Shaggy, Scooby, and Scrappy) on a case involving the six other contestants, who were all abducted by a mysterious figure. Scrappy (despite Shaggy and Scooby's objections) accepted the case, with the plan including Scooby and Scrappy disguising Shaggy as a contestant known as Miss Antarctica and entering the contest.
While in his disguise, Shaggy is abducted by a monster, with Scooby and Scrappy chasing him to his hideout, where Shaggy was held in one cage while the missing contestants were in another. After Scooby freed Shaggy, the pair were chased by the monster, with the pursuit ending with the pair and Scrappy trapping him inside the elevator before being encountered by Miss Bulgravia, after which Shaggy informed Miss Bulgravia that they had found the missing contestants and trapped the monster.
However, Miss Bulgravia turned heel by freeing the monster (revealed to be named Bruno) and sending him after Shaggy and Scooby, with Scrappy running off to save his friends. The twist revealed that Miss Bulgravia was the mastermind behind the abductions; enlisting Bruno to kidnap her opponents so she could win the Miss Earth crown unopposed. After cackling over her scheme, the evil Miss Bulgravia appeared on the stage to accept her crown, only for Scooby to use an electrical cord to lasso the villainess and Bruno, after which Scrappy covered both villains with makeup prior to their off-screen arrest.
Miss Bulgravia is a young Caucasian female, with shoulder-length black hair. She wears a strapless one-piece purple bathing suit, a sash bearing the name of the country she is representing, a necklace, and black high-heeled shoes.