Bryce Papenbrook is one such actor behind the scenes of "Attack on Titan." Papenbrook provides the English voice for central protagonist Eren Jaeger in the series, and it turns out that the performer has gone to some pretty extreme lengths to capture the intensity and emotional turmoil of the character (via Rolling Stone). Apparently, the iconic titan screams aren't saved up for reuse either but done freshly for each recording.

"There is no banking of sound files," Papenbrook explained. "There is only screaming as loudly whenever is needed. Going in I knew the intensity and I knew what I was getting myself into," he went on. "You know there's moments where Eren bites his hand in Season 1, I bit my hand so hard that I left bruises." Fans will recall that when Eren is still learning how to transform into his titan form in the 1st season, he sometimes bites his hand repeatedly to try to draw blood and provoke a transformation. Still, that's certainly an extreme length to go to capture the pain Eren is going through during those scenes. Amazingly, Papenbrook has gone even further for the role.

"In Season 2 Eren's very unhinged so I literally unhinged my jaw to let that pain and suffering and insanity come through because it's what this show deserves," he said. Even in a time when we regularly hear about the lengths that actors go to in order to get there for a performance, this is particularly extreme. Either way, if it's worth it for Papenbrook, then "Attack on Titan" fans can't argue with the results.