Ultimatrix Unleashed | Ben 10 Ultimate Alien

They retreated to the Plumber base. As Ben sat in a containment chair, Gwen and Kevin worked the manual overrides.

"I'm trying!" Ben yelled back, arm-flailing past a frozen yogurt stand.

But Ben smiled. The Ultimatrix beeped quietly—not a warning, just a heartbeat.

To fix the Ultimatrix, Ben had to do something he hated: nothing . For six hours, he couldn't transform. Couldn't fight. Could only watch as the watch slowly recompiled its core code.

When the smoke cleared, Ben wasn't Ben. He was a chimera—half Humungousaur, half Echo Echo, with Diamondhead crystals sprouting from his back. He had four arms, each playing a different sonic frequency. A lamppost melted from the sound alone.