It's day one of San Diego Comic-Con and the Autobots are ready to roll out. During a Hall H panel, the latest trailer for the animated movie Transformers One was revealed, but this time around, it wasn't dropped from space.

The panel featured stars Chris Hemsworth, Brian Tyree Henry, Keegan Michael Key, producer Lorenzo di Bonaventura, and director Josh Cooley. During the panel, the four discussed the upcoming movie. Those in attendance also got a peek at some clips on the upcoming movie as well.

Prior to the trailer release, Lorenzo explained the movie and why it's an animated movie. "The origin story, first of all, is incredibly rich," Lorenzo said. "And it's something we've thought about for a long time. If we tried to do this in live-action it would probably cost $500 million."