The Transmodulator is a device that Dr. Animo uses in the Ben 10 series.
The Transmodulator is a helmet. It has a grey base for the helmet with holes. It also has long antenas with red bulbs on the end. The helmet is connected to the other part of the device which he wears on his blody. It looks like a vest made of technology.
The Transmodulator allows Dr. Animo to transform normal animals into bigger mutant animals. Also after he made some improvments to it he can now turn ordinary staues of animals back to life.
Dr. Animo first uses this device in Washington B.C. to create a mutant army.