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Berger spoke about voicing Grimlock, stating in the Dinobot's voice that he was "driven by aggression!" Without any filters to get in the way, Grimlock's strength has a great capacity, even if it's slightly out of his control. Berger thought it was incredible role for an actor to play. He also did a little bit of "Me king!" in Grimlock voice, much to the delight of the crowd, while explaining what a great ally he was to the Autobots team.
North, the iconic voice of Nathan Drake from the "Uncharted" games, explained how much fun it was voicing both Autobot (Cliffjumper) and Decepticon (Bruticus), changing tones for each character. He jokingly poked at Berger in his Bruticus voice, similar to his Grimlock role. He also felt honored to watch Berger and Cullen work, both on this project and the animated "Transformers Prime" series.