Steven Spielberg’s adaptation of the classic ‘Tintin’ comics isn’t having an easy time making it to the big screen. Production is only a month away, but the film lacks all but one cast member: Andy Serkis as Captain Haddock. But Ain’t It Cool News is reporting that the film finally has a grand total of three cast members — and the newest additions are as close to geek gods as you can get: Nick Frost and Simon Pegg.

Frost and Pegg will play the Thomson and Thompson twins, two men who are identical on the page except for the curl of their moustaches. As the film is using motion capture technology, it will be easy to actually make them resemble each other. But who wants to bet Spielberg will stray from the comic page, and allow their true looks to shine through? Why cast Pegg and Frost unless you want them to, well, be themselves?

The hunt is still on for the title role of Tintin. Thomas Sangster was originally set to star, but had to drop out due to scheduling conflicts. The film was supposed to begin filming in the fall of last year, but was delayed after Universal Studios passed on financing the film.

Sony and Paramount have since stepped in to co-finance and distribute the trilogy, which will see Spielberg and Peter Jackson splitting up the directorial duties.

What do you think about the addition of Frost and Pegg to the “Tintin” cast?