"Kaijin" is a Japanese term that translates to "mysterious person" or "strange person." It is often used in the context of Japanese pop culture, particularly in anime and manga, to describe characters who possess unusual abilities or characteristics. These characters can range from heroes to villains, often embodying themes of transformation and duality. In the world of Tokusatsu, which includes live-action shows like Kamen Rider and Super Sentai, kaijin are typically depicted as adversaries with unique powers. They often undergo physical transformations, showcasing a blend of human and supernatural traits, which adds depth to their roles in the storyline.