What is the name of the rock band in 'Scooby-Doo and the Witch's Ghost'?

The rock band in “Scooby-Doo and the Witch’s Ghost” is The Hex Girls.

The fictional all-female gothic rock group appears during the gang’s visit to Oakhaven, Massachusetts. Its members are Thorn, Dusk, and Luna, with Thorn—whose real name is Sally McKnight—serving as the lead vocalist and guitarist. Their eco-goth style initially makes Fred and Daphne suspect that they may be genuine witches.

The Hex Girls become allies rather than villains. Thorn’s apparently supernatural ritual is actually an herbal remedy for her vocal cords, and she later helps Velma and the others imprison the real supernatural threat, Sarah Ravencroft. The film ends with the band performing a concert to help repair the town.

The characters debuted in the 1999 direct-to-video film and became recurring figures in the franchise, appearing in “Scooby-Doo and the Legend of the Vampire,” “What’s New, Scooby-Doo?,” “Scooby-Doo! Mystery Incorporated,” and “Scooby-Doo and Guess Who?” They are sometimes confused with other fictional musical groups, but The Hex Girls is the canonical name.