
Joseph (Carl Lumby) - Reason: to steal the Jewel Scarab that Scooby Swollowed in guise of a Cake at the Party, so became the mummy to find the Scarab. Ishmael Masthead/ Demon Priest (Rob Paulson) - Reason: The Mummy Promised him wealth beyond his wildest dreams, so became his partner. Starry Skies (Masasa Moyo) - a UFO expert, Reason: she told the gang to stay away from the Sphinx, and was the only person possibly close to it. Ishmael Masthead (Rob Paulsen) - the fairy boat operator, Reason: he kept an "Out for Lunch" sign, possibly if he was going to lunch or something mysterious. Bob and Edna Turnbuckle (Andre Braugher and Whoopi Goldberg) - tourtists celebrating their 32nd anniversary, Reason: they knew Thelma, and that she was going to show the Pyramid, and were upset because she never showed up. Helmut Pith (John Rhys-Davies) - an art dealer from the University of Russia, Reason: he vanished after he used the green statue to open the trap door, that Daphne was presumely under.
Joseph (Carl Lumbly) - the merchant of his store, Reason: he seems to pop up and down after meeting the gang. The Mummy (Arnold Vosloo) - the Mummy who trapped Thelma into the Sphinx, where the Treasure was kept. The Demon Priest (Carl Lumby) - a ghost who was a hight priest then makes a pact with the Mummy. Thelma Dinkley (Ashley Johnson) - Velma's cousin.
They arrive only to find that Thelma is missing and a mysterious Mummy is terrorizing the tourists! Based on the computer game of Scooby-Doo: Jinx at the Sphinx. Scooby and the gang travel to Egypt to visit Velma's cousin - Thelma, an Egyptologist.