Pluto

Designed as a massive, muscular combat machine, this horned metallic titan features distinct red facial markings and was engineered for one purpose: to annihilate the world's most powerful robots, including Astro. While his initial programming drove him to fulfill his destructive mission at any cost, he eventually undergoes a profound transformation. Moving beyond his cold directives, he discovers a sense of autonomy and forms an unexpected, lasting bond of friendship with his former target, Astro.