Ben 10: Ultimate Alien All Episodes Updated May 2026

In The Transmogrification of Eunice , Ben meets a female Unitrix named Eunice (a living copy of the Omnitrix’s AI). Meanwhile, Vilgax returns—not as a simple conqueror, but as a cunning politician. He tricks Sir George, steals the Dagon’s power, and becomes a god-like tyrant. The final arc sees Ben unlocking the (mistakenly called the "Ultimatrix" still), which allows him to evolve his aliens to levels beyond imagination. In The Ultimate Enemy , Ben faces Vilgax-Dagon. Sir George hands Ben the sword Ascalon . Ben absorbs its energy, merges with all his aliens at once, and for one glorious moment, becomes a being of pure will. He doesn’t destroy Vilgax—he recreates him, stripping the Dagon’s essence and turning Vilgax back into a mortal warlord.

The middle episodes are a desperate chase. Aggregor is a powerful Osmosian (like Kevin) who can absorb energy and matter. He captures five aliens—an Aerophibian, a Necrofriggian, a Piscciss Volann, a Geochelone Aerio, and a Conductoid—each holding a fragment of the map to the , birthplace of the alien gods, the Celestialsapiens. ben 10: ultimate alien all episodes

Part 1: The Secret is Out

A new terror emerges. An ancient, eldritch god-like entity named —the source of all vampiric and esoteric magic—breaks free from his dimensional prison. His servant, the immortal sorcerer Sir George (the original user of Ascalon, a sword that predates the Omnitrix), has kept him sealed for a thousand years. But now, the Dagon’s cult rises. In The Transmogrification of Eunice , Ben meets