The Omnitrix is a watch-like alien device. When the button on the side is pressed, the face pops up and shows a silhouette of an alien. The face can then be twisted to select different aliens. By settling on a specific alien and pushing the face back down, the Omnitrix transforms the bearer into the alien they selected. However, the Omnitrix malfunctions frequently, transforming the bearer into an alien that wasn't the one selected on many occasions.
The Original Aliens of the Omnitrix:
Fourarms
Diamondhead
Heatblast
XLR8
Stinkfly
Wildmutt
Ripjaws
Upgrade
Grey Matter
Ghostfreak I
Additional Aliens in the Omnitrix:
Cannonbolt
Wildvine
Benwolf
Benmummy
Benviktor
Ghostfreak II
Upchuck
