Ghostfreak

Ghostfreak is an Ectonurite alien from Anur Phaetos.thumb|right|200px|Ghostfreak transformation in the original series

Appearance
Ghostfreak is a shadowy, phantom-like alien, and has a protoplasm that can change its density. This enables him to phase through matter and turn invisible at will. He may have only one eye, but he can position it anywhere on his body, but by using a track traced along his skin. His appearance can also bring fear in the hearts of criminals everywhere, and sometimes, even Ben is creeped out. Ghostfreak can also peel back his own skin, which reveals a horrifying mass of innards, but it has yet to be seen. Direct light and chemicals that can affect his body will nullify his invisibility and intangibility. He is also not meant for extreme combat.

Ghostfreak's fully developed form is truly more menacing than the Omnitrix form. He actually has a white head, although upside down, his tentacles, hidden underneath the first form are revealed. Spikes grew on his shoulders and through one half of his arms. In this form, Ghostfreak (Zs'Skayr) now has claws instead of droopy hands. The skin he had in his Omnitrix form is presumably a safety feature incorporated by the Omnitrix's creator, Azmuth, both to safeguard this alien from exposure to sunlight and to lessen the frightful impact of its true hideous appearance. This is substantiated by the fact that Zs'Skayr willingly ripped it off, despite it being bright daylight at the time, in order to reveal his true appearance; the true nature of this skin, however, is never fully explained in the series.

Abilities
Ghostfreak can also peel back his own skin, which reveals his horrifying true form. Direct light and chemicals that can affect his body will nullify his invisibility and intangibility. He is also not meant for extreme combat with his second layer of skin. He was removed from the omnitrix when he escaped because Ectonurites have the miraculous ability to possess life from the singlest strand of DNA. He was trapped inside of the Omnitrix again before he was incinerated by Ben in Be Afraid of the Dark. (In the old series, it is likely that the Omnitrix would have been on the side of the head with no eye.) If Ben is in this form for more than 10 minutes then Ghostfreak's personality might take over which its unlikey.

Ectonurites are perhaps the most frightening creatures in the galaxy. With an exposed and upside-down skull for a head, only one eye, gray blue skin, exposed bones on certain parts of their bodies, and white talons. They can also possess people for limited periods of time. Ectonurites also have powerful psychic abilities such as telepathy and telekinesis (ghostfreak used telekinesis in the episode Ghost Town while he was fighting Vilgax). Ghostfreak can shoot a purple or blue ( Ghost Town episode) beam from his chest (when he pulls back his skin) and from his hands. This ability was confirmed in the episode Be Afraid of the Dark when Benvicktor and Ghostfreak locked beams in the vacuum of space.

While wearing his second skin, Ghostfreak can move his eye across black lines that cover his body, as shown in Hunted.

Weaknesses
Direct exposure to sunlight can greatly harm and even kill Ghostfreak without the second layer of skin.This weakness is the result of Zs'Skayr removing his protective second layer of skin after being seperated from Ben. Ghostfreak's death happens when Ben opened the roof of a space ship when in space so the light of the Sun shined onto Ghostfreak killing him Certain substances can also neutralize his phasing ability and his invisibility.

Homeplanet
Main article: Anur Phaetos.

Anur Phaetos is an interdimensional planet with ectonurites, ghostlike aliens with intangibility and invisibility.

Alien Force
Ghostfreak reappeared in the Alien Force episode Ghost Town. He was kept in solar prison after being separated from Ben. Vilgax freed it to get the information about the location of Primus. After being freed it attacked Vilgax and conquered Vilgaxia (Vilgax's home planet) and turned citizens into Ghostfreak's minions (whom resemble Ghost Freaks orriginal form from the first series). Vilgax ran off to get help from Ben and Ben helped him. During the battle with Ghostfreak they were easily outmatched by him but when Ghostfreak tried to control Vilgax, Ben leaped in and Ghostfreak's DNA is added into the Codom Stream, allowing Ben to transform into Ghostfreak, only for Ghostfreak to quickly regain control of Ben. But with the help of Vilgax, Ben took control and transformed back. Ben still has Ghostfreak and can use it.

Ultimate Alien
He is now back in his sun-shielded form, instead of gray he is now white in color, and his lines are rearranged, he also has a larger bigger green eye now. He supposedly does not have the spirit of Zs'skayr inside of him anymore.

Naming and Translations

 * German: Schattenmonster/ Shadow Monster
 * Croatian: Prikaza/ Apparition or Wraith
 * Burmese: The White Smoke/Ghost/Genie (verifies in different locations)
 * Russian: Prizrak/ Ghost
 * Italian: Pelle d'oca / "goosebumps"

Trivia

 * Ben got him back in the Omnitrix twice, once after killing him with the sun, and again in Alien Force
 * Ghostfreak shares many traits with Big Chill such as intangibility and invisibility, and at one point Ben had no control over them (though, Ghostfreak escaped the codon stream while Big Chill was pregnant).
 * When giving background information on Ghost Freak, his creators said that before they started drawing prototypes, they decided that they wanted to make something like a Genie. As time went on the however, idea and character design eventually evolved into a ghost. A hint of the original design can be seen in Ghost Freak's leg tail.
 * Ghostfreak's origin within the Omnitrix seems to be in question; in the series, he says he passed on his conciousness through a single strand of DNA, while the "pop-up" facts shown during several marathons indicate that he rode the Florauna DNA when it was collected in order to get into the Omnitrix.