A "Titan Shifter" is a character from the anime and manga series Attack on Titan. These individuals possess the unique ability to transform into giant humanoid creatures known as Titans. This transformation grants them immense strength and regenerative capabilities, making them formidable in battle. Titan Shifters are crucial to the story's plot, as they hold the key to understanding the origins of the Titans and the conflict between humans and Titans. Notable Titan Shifters include Eren Yeager, Reiner Braun, and Annie Leonhart, each with their own motivations and backstories that influence the series' events.