Ben 10: Ultimate Alien
A solid choice
Ages 7–13First shown 2010
Taking place a few weeks after where Ben 10: Alien Force leaves off, Ben 10: Ultimate Alien follows the now sixteen-year-old Ben. The Omnitrix has been destroyed and Ben must learn to master the secrets of the new Ultimatrix, a gauntlet-like version of the old Omnitrix that not only gives him access to all of his original powers and abilities, but also allows him to evolve his alien forms into even stronger and even more powerful versions (called "ultimate forms").
Our verdict
- Good influence 4/5
- Parent appeal 4/5
- Well made 3/5
Reviewers generally praise the series for its mature tone and complex character arcs that explore the burdens of fame and responsibility. While the show is noted for its high-quality voice acting and engaging first season, some find the later episodes suffer from inconsistent animation and repetitive plot points. Overall, it is seen as a sophisticated superhero adventure that balances dark themes with humor, though it may occasionally be too intense for younger viewers.
Why these scores
Good influence
Does it show behaviour you'd be happy to see copied?
4out of 5
The series features a complex protagonist who often struggles with arrogance and the pressures of fame, occasionally acting in dismissive or immature ways. However, the overarching narrative rewards his growth, highlighting moments of significant self-sacrifice, responsibility, and the conscious choice to reject absolute power. While some reviews express concern over instances of rudeness or intense violence, others praise the show for portraying realistic character development and loyal friendships.
Parent appeal
Will you enjoy watching it with them?
4out of 5
Many adults find the show engaging due to its more mature tone, emotional depth, and inclusion of complex themes like Lovecraftian horror and the challenges of growing up. While there is high praise for the dramatic balance and wit, some commentary notes that the attempt to be 'darker' can occasionally feel forced, and a significant number of filler episodes in the middle seasons may lead to boredom. There are also mentions of grotesque imagery and mature relationship dynamics that might be surprising for a children's show but offer more for an adult audience to chew on.
Well made
Are the writing, animation and sound made with care?
3out of 5
The production quality is generally high, with reviewers frequently highlighting the excellent voice acting, immersive world-building, and strong musical score. The first season is particularly praised for its tight storytelling, though later seasons face criticism for an increase in filler content, inconsistent character writing, and visible animation errors. While the visual style is mostly well-regarded, some viewers found certain alien designs to be lazy or repetitive.
Watch-outs
Overstimulating: not enough data
We haven't found enough independent sources to say yet.
Toy-led: not enough data
We haven't found enough independent sources to say yet.
Grating audio: not enough data
We haven't found enough independent sources to say yet.
Where to watch
Stream for free
- Not that we know of
Stream with a subscription
Rent or buy
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DVD and Blu-ray
Streaming availability from Watchmode.
Last updated 18 October 2026.