Ultraman is the iconic title character and central hero of the Ultraman series, a classic Japanese tokusatsu franchise. He is a giant alien warrior from Nebula M78 who protects Earth from monstrous threats and hostile invaders. In the original series, Ultraman merges with human Shin Hayata to fight kaiju and defend humanity. The character is known for his silver-red suit, heroic presence, and role as a symbol of justice, sacrifice, and interstellar defense.