When you voice an animated movie or CGI character, that often means you’re totally replaced in the version that’s dubbed for other countries. But in Vin Diesel’s case, the actor recorded his one line “I am Groot” in all of those languages himself. And if you think he got a cushy job taking on this role, you are wrong. Diesel put a lot of thought into his character’s inflection and recorded multiple takes for each scene. He even wore leg extensions to help him imagine what it would be like to be a 7-foot anthropomorphic tree. That is dedication!
Watch a video of Vin Diesel, leg extensions included, recording his lines after the break.