Class 4 article

Ben 10: Alien Force was a theme introduced in 2010 and discontinued in the same year, based on the cartoon series of the same name broadcasted on Cartoon Network. It was very unsuccessful with LEGO buyers and only lasted about 6 months on the market in some countries. It is also a TECHNIC subtheme.


As seen on the Spring 2010 LEGO Club Jr. Magizine.

Set five years after the events of the original Ben 10 series, Ben 10: Alien Force follows the 15-year-old Ben Tennyson as he trains a new team of teenage heroes to fight the genocidal Highbreed and locate his missing grandfather, Max. The Omnitrix, the strange wristwatch-like device that allows him to transform into ten different types of super-powered alien, has recalibrated, giving him access to a new selection of breeds and abilities.


The theme was small and short-lived, containing just six sets. Each set is an action figure version of one of Ben's alien forms, composed of between fourteen and twenty-two pieces. They are similar to BIONICLE figures but with simplified constructions and more specific parts. The theme was the first to use a re-designed ball-and-socket joint, intended to replace the earlier, more rigid kind that was prone to breaking. Each figure has glow-in-the-dark eyes and a glow-in-the-dark Omnitrix on its chest.


  • The theme was revealed at about the same time that BIONICLE was being wound down, leading many to speculate that Ben 10 was the intended successor to the older line. That successor was later revealed to be Hero Factory, with Ben 10 being its own, separate line.
  • A promotional brick, the Ben 10 After Dark Brick, was released at LEGOLAND Windsor.
  • There were only 9 sets altogether, counting combiners.
  • The Ben 10 theme is considered by some as the most unpopular LEGO theme of all time. The reason for this is that people thought that the designs, parts, or prices were bad.

List of Sets

Image#SetNumber of piecesMinifiguresPriceRelease
8409-1.jpg8409Spidermonkey21$14.99 / €14.99January 2010
8410.jpg8410Swampfire22$14.99 / €14.99January 2010
8411.jpg8411Chromastone21$14.99 / €14.99January 2010
8517.jpg8517Humongousaur14$14.99 / €14.992010
8518.jpg8518Jet Ray16$14.99 / €14.99January, 2010 (US and UK)
8519.jpg8519Big Chill20$14.99 / €14.992010
No imageBen10 Combiner 1   
No imageBen10 Combiner 2   
No imageBen10 Combiner 3   

See Also