Ultraman Cosmos (ウルトラマンコスモス Urutoraman Kosumosu?) is a gentle Ultra from an unknown galaxy. He is known for his calm and gentle fighting style, and his compassion for monsters. He first went to Earth to protect it from the Alien Baltan Basical's invasion. During his time on Earth he befriended a young boy named Musashi Haruno, who he gifted with a blue crystal to summon him if the boy needed help. After Cosmos dealt with the Baltan invasion, he left Earth for ten years before reuniting and merging with a now 19 year old Musashi so that they could combat the Chaos Header.