Eren looked at the pony and backed away. "Look, stay away from me you talking horse," he said as he held his hooves up in front of him... Wait... hooves? Giving him self the look over in the reflection of one of the crystal buildings, he let out a scream. "Why am I a pony!?" He asked as he looked at himself. He still had his uniform and 3D movement gear but now he had hooves.
Rolo also found out he was a pony at this point after seeing his hooves. "Why am I a horse, what's going on here?" He asked, hoping for an answer from anybody. (Like, let's say, a dark king.)