It's already been reported that Doctor Who's David Tennant will be lending his vocal stylings to the new Rooster Teeth mecha sci-fi series gen:LOCK, but now, thanks to a newly released teaser trailer from the Austin-based company, we have our first official listen to Tennant in the previously teased role of Dr. Rufus Weller (aka "Doc"), the inventor of the technology that features in the show's name.
http://www.syfy.com/syfywire/first-genlock-teaser-features-doctor-whos-david-tennant-in-action