Ben 10 Omniverse Season 4 Episode 7 — "An American Benwolf in London"

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Foggy European streets, underground magical connections, and the return of a classic werewolf form collide in Ben 10: Omniverse. Season 4, Episode 7, "An American Benwolf in London," takes the Plumber duo across the Atlantic for a gothic adventure that bridges advanced alien tech with ancient Earth legends.

While on an official diplomatic mission in London, Ben Tennyson and Rook Blonko run into their spell-casting cousin Gwen and Kevin Levin. What begins as a routine inspection quickly transforms into a high-stakes supernatural pursuit when old enemies attempt to breach an ancient, hidden magical vault.

“When you're running through the foggy streets of London chasing monsters, sometimes you have to unleash the inner beast to get the job done right.”

Episode Summary

The episode starts with Ben and Rook traveling across the pond to London, England, to coordinate on a sensitive security matter with British Plumber divisions. However, things take a highly unpredictable turn when they unexpectedly cross paths with Gwen and Kevin. The family reunion is cut short when they learn that the villainous, ancient wizard Hex and his ambitious niece Charmcaster have set their sights on a hidden magical nexus buried deep beneath the historic city.

The villains are hunting down an artifact capable of tearing open dimensional rifts, threatening to blend Earth's reality with Ledgerdomain. Tracking the mystical energy spikes through London’s subterranean catacombs, the team finds themselves dealing with animated stone gargoyles and powerful magical traps designed to tear apart anyone who gets too close.

As the magical feedback starts disrupting conventional tech, Ben is forced to rely on heavy-hitting, agile alien forms that can handle mystical threats. This leads to the highly anticipated re-emergence of his iconic Loboan transformation, Blitzwolfer (formerly known as Benwolf). Utilizing the alien werewolf's devastating sonic howling abilities, Ben breaks through Hex's magical forcefields, allowing Gwen and Rook to neutralize the dark artifacts and lock down the vault once and for all.

Themes & Character Development

The Synergy of Magic and Tech: The narrative masterfully highlights how Rook’s high-tech Plumber gadgetry and Gwen’s refined magical manipulation can work hand-in-hand to overcome obstacles.
Global Scale of Threats: Moving the action out of Bellwood reminds the audience that the Tennyson family's responsibilities as universal protectors stretch far beyond American borders.
Embracing True Instincts: Ben's reliance on Blitzwolfer highlights his ability to trust his raw, feral alien instincts to adapt when complex energy grids and technical strategies fail.

Production Details

First Aired: November 16, 2013
Created By: Man of Action (Concept), Derrick J. Wyatt (Art Director)
Written By: David McDermott
Directed By: Jae Hong Kim
Produced By: Cartoon Network Studios
Art Style: Beautifully atmospheric, heavy with deep navy blues, foggy greys, and glowing magenta magical circles that perfectly capture a dark, gothic London aesthetic.
Voice Cast:
- Yuri Lowenthal as Ben Tennyson / Blitzwolfer
- Bumper Robinson as Rook Blonko
- Ashley Johnson as Gwen Tennyson
- Greg Cipes as Kevin Levin
- Kari Wahlgren as Charmcaster

Fun Facts & Trivia

Did You Know?

The title "An American Benwolf in London" is a direct, playful reference to the classic 1981 horror-comedy masterpiece *An American Werewolf in London*.
This episode officially introduces the name **Blitzwolfer** in-universe for Ben's Loboan form, which was previously dubbed "Benwolf" by fans and media during the original series.
The architectural designs of London's underground corridors feature subtle inscriptions that link back to the ancient Knights Templar lore explored in earlier seasons.
Kevin Levin gets several hilarious comedic beats in this episode, showing his open frustration with handling British driving rules and narrow European roads.
Gwen's spellcasting visually shows greater refinement here, reflecting her continuous training and growth as a top-tier mystic since going off to college.

Legacy & Impact

"An American Benwolf in London" holds a special place in the hearts of *Omniverse* fans for its incredible gothic atmosphere and the long-awaited return of one of Ben's coolest monster-themed aliens. By combining the core dynamics of the original alien-hunting team with the rich mystical lore of Hex and Charmcaster, the episode delivers a fantastic blend of mystery, family humor, and high-volume sonic action that makes Season 4 highly memorable.