Black King is a powerful kaiju from Kaette Kita Ultraman, appearing as one of the series' major monster threats. It is a giant, heavily armored, horned beast known for its brute strength, durability, and destructive rampages. In the story, Black King serves as a formidable enemy that challenges Ultraman and raises the stakes of the conflict. As a classic monster from the Ultraman franchise, it is remembered for its intimidating design and its role as a tough opponent in battle.