Sibella Dracula

Sibella Dracula is a main character in Scooby Doo and the Ghoul School, serving as one of Miss Grimwood's pupils.

Biography
Sibella is a purple-skinned, green eyed daughter of Dracula. Because she is a vampire, she has the ability to transform into a bat, just like her father, although she is not affected by sunlight.

Role in the movie
Sibella is one of Miss Grimmwood's pupils, being the first one to meet Shaggy, Scooby, and Scrappy. She, along with the rest of the pupils, managed to persuade Shaggy and co. to stay and be their gym teacher.

During the volleyball game, Sibella was able to score one point for her team, helping them defeat the Calloway Cadets.

During open house, she gave her father a bat robe and Matches a fireproof robe.

Sibella was the last person to be captured by Revolta, having resisted the bat's attempt at hypnotizing her. However, when she failed to warn Tanis and Winnie, and eventually was hypnotized. Once she was captured, she was forced to do work around Revolta's castle until it was time for her revoltization.

Under Revolta's Command
Despite being arguably the strongest of the girls, Sibella was the first to react to the potion, with her face changing into an angry expression and her pupils becoming slit. She was also the second-to-last to be freed from the potion when Winnie pulled off her helmet, and the last one to be freed before the potion was corrupted; as such, she initially showed signs of successful revoltization, with her eyes twitching and enlarging before returning to normal. Despite being freed, she was willing to return to the potion when she saw what Revolta could do to Scooby, however Scooby inadvertently corrupted the potion and ruined it, thereby saving the girls. When the castle was set to explode, Sibella remarked how she couldn't carry all of them in one go and was ultimately saved by the Calloway Cadets. Back at the school, she was shown dancing with her father and later waved goodbye to Shaggy and co. when they left the school.

In other media
She appeared in an episode of ''OK K.O.! Let's Be Heroes'' called "Monster Party".

Trivia

 * There is a possibility that Sibella was, in fact, turned evil.