Marvel Studios’ upcoming production of Thor, the Mighty God of Thunder, is about to get underway in January as we’ve seen a stream of updates in recent months leading up to the exciting project.

In just the last few weeks alone, Idris Elba and Kat Dennings joined the ensemble cast along with Stuart Townsend, Ray Stevenson, and Tadanobu Asano as The Warriors Three; Joe Quesada’s talked up the movie and its director, Kenneth Branagh. And last but not least, rumors of Jeremy Renner playing Hawkeye have spread with the possibility of the character having a cameo role in Thor.

With all of the casting announcements, one thing was missing: Stan Lee’s role! Stan talked in a few interviews about meeting director Branagh, praising him and revealing that Branagh promised him a role in the movie.  Now it has been confirmed from Stan the Man himself!

On his Twitter account yesterday, Stan put up the following tweets:

“Hey, I got an email from the multi-talented director of Thor, Kenneth Branagh. Not enough space left to tell what he said– stay tuned–”

“Kenneth Branagh (of course I call him “Ken!”) said my cameo’s set for the upcoming Thor movie. –To him, it’s a cameo, to me– it’s a ROLE!”

“went easy on Ken Branagh when we discussed my role in Thor. Told him I wouldn’t insist on my name above the title, I think he was grateful”

“Yeah, I mentioned Ken Branagh a few times, but I warned you I was a name dropper. Seriously tho’, with him directing, Thor’s a sure winner”

“Of course, my previous tweet revealed the extent of my innate modesty. I really wanted to add ‘With me doing a cameo, Thor’s a sure winner'”

“Can’t tweet anymore. Due to Thor, I must start rehearsing my thee’s and thou’s. So, if thou objecteth not, I wish thee well! ‘Nuff saideth”

I’m happy about Stan getting a cameo in my most anticipated film out of Marvel’s lineup of solo character titles coming out over the next few years and its always a pleasant treat for the fans. That last time we got to see the legend was last summer in The Incredible Hulk and the first Iron Man. I have no idea what to expect from his guest appearance and I wonder if it’ll top him playing Larry King in Iron Man 2 or Hugh Hefner in Iron Man.

That’s not all we got from Twitter this week though! Jaimie Alexander, who we know is playing Sif in Thor, mentioned in a recent tweet that she’s excited about starting rehearsals, which according to her, begin this week. This should mean that many of the cast will be coming together for the first time.

It look s like we’re on track without any delays for the mid-January production start and I look forward to seeing the first set photos and images of our favorite Asgardians in costume.

Thor opens in theaters May 20, 2011.

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Image of Edward Norton and Stan Lee courtesy of MoPo