The Ultimatrix is a powerful device featured in the animated series Ben 10: Omniverse. It allows the main character, Ben Tennyson, to transform into various alien species, each with unique abilities. The Ultimatrix is an advanced version of the original Omnitrix, designed to enhance Ben's powers and provide him with new transformations. One of the key features of the Ultimatrix is its ability to unlock the DNA of more advanced aliens, giving Ben access to a wider range of forms. Additionally, it includes a built-in training mode, helping Ben improve his skills and learn how to use his alien powers more effectively.