"Justice League Unlimited" is an animated television series that serves as a sequel to the original "Justice League" series. It features a wide array of superheroes from the DC Comics universe, including popular characters like Superman, Batman, and Wonder Woman. The show focuses on the formation of a larger team of heroes who work together to combat various threats to Earth. The series aired from 2004 to 2006 and consists of 39 episodes. It explores themes of teamwork, heroism, and moral dilemmas while introducing lesser-known characters such as Green Lantern and The Question. The storytelling is praised for its depth and character development, appealing to both children and adult audiences.