Bryce Papenbrook, the English voice behind Eren Yeager in ATTACK ON TITAN, actually dislocated his jaw while recording lines for the big Season 2 reveal. He wasn't just acting; he intentionally unhinged his jaw before a take to make sure the pain came through in the performance. As Papenbrook put it, "I literally unhinged my jaw before that take, because I wanted that pain to come through".