This mummy alien is a Thep Khufan that appeared in "Underwraps". This alien mummy was sent by Dr. Vicktor to find a dangerous element called corrodium that crashed on Earth millions of years ago. Grandpa Max explains that the crystals are a potent but unstable power source, and the radiation emitted by the crystals causes almost instant mutation in humans and other Earth-born creatures. Todd Maplewood a boy Ben and Gwen met, said it arrived in purple lightning, which is the same way the Yenaldooshi arrived in "Benwolf" Max states there may be a connection between the Yenaldooshi and the mummy alien, which is proven in "The Return". During Ben's battle with the creature, its DNA is absorbed by the Omnitrix, giving Ben access to the form. The mummy alien is frozen solid by Upgrade and buried, along with its corrodium, under a thick bed of concrete. It was released by the Yenaldooshi in "The Return" and assists in Dr. Vicktor's plan to plunge the earth into eternal darkness. When Ben is fighting Ghostfreak, Doctor Victor, and the mummy alien in "Be Afraid of the Dark" Doctor Vicktor inadvertently sends both himself and the Mummy Alien to an unspecified location through an ill-timed use of his teleportation device.