Kyrieloid is a recurring fictional monster and antagonist in Ultraman Tiga, serving as one of the series’ memorable kaiju-like enemies. It is a humanoid alien being associated with deception, manipulation, and attacks against humanity. Kyrieloid often appears as a major threat that challenges Ultraman Tiga and reflects the series’ themes of fear, faith, and corruption. As an enemy of the Ultra hero, it plays the role of a dangerous supernatural adversary rather than a human character.