During Dragon Training, fraternal twins Ruffnut (left, KRISTIN WIIG) and Ruffnut (TJ MILLER) come face to face with a Deadly Nadder, one the most dangerous Dragons feared throughout the land --in DreamWorks Animation's 'How to Train Your Dragon,' releasing March 26, 2010. How to Train Your Dragon ™ & © 2010 DreamWorks Animation LLC. All Rights Reserved.