When it comes to motion capture work, very few people have contributed to the medium more than Andy Serkis. First coming to prominence with his constantly amazing work in franchises such as ‘The Lord of the Rings’ and ‘Planet of the Apes’, he’s not stopping any time soon as he’s currently contributing work to ‘Star Wars: Episode VII – The Force Awakens’ and ‘The Avengers: Age of Ultron’. But what exactly has he done with the Marvel Cinematic Universe? He recently divulged some information to Empire Magazine.

After the first trailer for Joss Whedon’s follow-up to his massive 2012 blockbuster dropped last month, rumors began to circulate that Serkis would be playing villain Ulysses Klaw. However, in his latest interview about his part in Marvel Studios’ next feature film, he mostly focused on his behind the scenes duties as a motion capture consultant. According to Comic Book Movie, the mo-cap master discussed the sort of prep work that went into creating Ultron:

“We did some work on Ultron. On the development of Ultron before James Spader came on board. In terms of movement styles: was he gonna be human-like? was he gonna be robot-like? So we worked with a bunch of different people, from body-popping experts to dancers, to this guy called Neil who’s nearly eight feet tall…”

Then, he moved on to the Hulk, who appears to be voiced by Mark Ruffalo this time around rather than Lou Ferrigno, the first actor to take up the gamma-infested mantle of the Green Goliath:

“We gave Mark weights, we had voice projections so he could do his Hulk roar. On screen we could have a virtual representation of the low-res avatar of The Hulk, so he could come out and feel that sense of scale.”

Finally, he went on to say that he’s just as happy to work behind the scenes as he is to work in front of the camera. Despite his last performance garnering some talk of an Academy Award nomination, it sounds like he’s perfectly content to be a part of the process in anyway possible:

“It’s a journey I end up going on with the actors. To find out what they want to get out of it, and and what we can do to help them so it’s still them authoring the role. Initially when you’re asking them to put a grey suit on, they’re not very into the idea. But it’s usually within the first hour, when they can see the result of them being in that suit [on screen] in real-time, they settle in. And then they’ve lost themselves in our world. James in particular – he loved every minute of it.”

Are you excited to see Andy Serkis’ work in ‘The Avengers: Age of Ultron’ both onscreen and behind the scenes? Do you think that he deserves an Academy Award for his previous work? And do you have any theories about what character he’ll be playing in the Marvel Cinematic Universe? Let us know in the comments below.

‘The Avengers: Age of Ultron’ assembles in theaters on May 1, 2015.