Imhotep's Priests of Osiris are villains in the film, The Mummy. They are his personal bodyguards that serves him. As punishment they were all condemned to be mummified alive.
Imhotep reached into the broken canopic jar that once had held Anck-Su-Namun's heart and pulled out the desiccated organ, holding it in his hand before crushing it into dust and blowing it against a stone mural of two priests. Muttering an incantation, Imhotep brought the stone priests to life; the priests in the mural were two of his priests from ancient times which had been mummified alive by being encased within the walls. Imhotep gave them the order to kill O'Connell and the others and awaken the other priests.