Caesar Legend Gundam rules as king of Regina World, renowned across multiple worlds for his excellence in literary pursuits and martial prowess. His reign extends beyond his own realm, marked by a formidable reputation as both leader and warrior. A core aspect of his character is his profound devotion to Cleopatra Qubeley, his beloved, whose frail health is noted. This deep emotional bond and his unwavering commitment to her well-being form a central pillar of his story, ultimately driving him toward a significant and fateful decision powered by the strength of his love.

His physical representation embodies regal and dynamic elements. His backpack dramatically transforms into a crimson lion, symbolizing power and nobility. He is typically depicted wielding a sword accompanied by a scabbard. His design incorporates clear parts, including a clear mask, and features an expressive hand part among his accessories, contributing to his dignified presentation.