Eren Kyojin is a fictional character from the anime series 'Shingeki no Kyojin' (Attack on Titan). Eren is a passionate and determined young man who becomes a central figure in humanity's fight against the Titans. Known for his strong will and desire for freedom, he plays a crucial role in the story's progression, making difficult choices and driving the narrative forward with his relentless pursuit of justice and vengeance against the Titans.