MythBusters star Adam Savage is kind of the unofficial king of Comic-Con — he's got the nerd credibility from being a driving force behind renewed interest in sciences, but he also really loves to play dress up. The Con is just his stage, the Con-goers his audience, and we've got an exclusive look at the show he put on this week.

Savage had not one but two very elaborate spacesuit costumes, both rendering him completely unreconizable to play his favorite annual game on the convention hall floor: Adam Incognito. We've got exclusive behind-the-scenes video of Adam getting ready, walking the floor, and posing with fans in his Alien replica ("That's the coolest," one girl says), along with photos showing the detail on the elaborate costume, which he says took him 10 years to build.

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"I just walked the floor in my Alien spacesuit from Ridley Scott's movie and it was the hottest and most balmy experience of my life — I think I lost three pounds just walking for 30 minutes," Savage told Yahoo TV.

After wearing a "totally accurate Mercury spacesuit from the first Nasa space program" on Thursday, Savage admitted this was a spacesuit-themed year.

View photos John Hurt as Kane in 'Alien' (1979) More

But why the Alien homage? "The Alien spacesuit, which was designed by Moebius, is one of my favorite spacesuit designs ever, and I'm a spacesuit fanatic," Savage revealed. "I've got a bunch of replicas of real ones and fake ones. I've been working on this this particular suit over the last 10 years. It's the final culmination of a decade of obsession — it was worth every minute of labor put into it to see the responses from all the cosplayers out on the floor."

View photos John Hurt as Kane in Alien (1979) More

Savage, who recognizes that 10 years to build a costume might sound extreme ("slow and steady..."), detailed the process of perfecting this particular look. "When I do something like this, where the suit is supposed to be weathered and worn and torn up from years of use, putting it together is only the first part of a very difficult process. I've got to also get all the pieces to look like they've grown old together.

"That involves a level of weathering that is incredibly painstaking. Basically I finished this suit about a month ago, and it's been sitting in my shop; I've been going into my shop every day for 20 to 30 minutes and adding layers or weathering, coffee staining, metal work, blackwashes, rusted copper-finish washes. That's one of the reasons I build everything, so I can do that final paint job and bring it all into cohesion."