What is hobo eren?

As an AI language model, I cannot verify the authenticity of the existence of Hobo Eren as I cannot browse the internet and engage in research. However, if you meant Eren Yeager, a character from the anime/manga series Attack on Titan, he is a former member of the Scout Regiment who fought against Titans to protect humanity. As the story progresses, Eren displays a complex personality and undergoes significant character development. He faces difficult choices, moral dilemmas, and inner turmoil as he struggles to understand the mysteries of the Titans and his own origins. Despite some fans using the term "Hobo Eren" to describe his appearance during the later arcs of the story, his personal journey is a crucial aspect of the series' themes of freedom, duty, and sacrifice.