Yokota represents Hell by commissioning an animal design team for theme park creatures. He possesses long white hair, a purple eye-patch over his right eye, and red bandages wrapped around his right arm. He typically wears a white laboratory coat riddled with holes, enhancing a mad-scientist look. This intimidating appearance contrasts sharply with his earnest, humble personality; he feels embarrassment presenting his own drawings to designers and shows consideration by paying double for approved designs, earning a reputation as a good client.

Previously an angel who closely resembled Shimoda but with white hair, his transition to Hell resulted in adopting a chūnibyō manner of speech and a deliberately edgy personal style. This aesthetic dictated his mandatory custom Hell uniform, initially designed under budget constraints to reflect "edgy and cool" preferences, requiring permanent use even when the style later caused him personal embarrassment. His creature requests to designers include thematically appropriate creations like a three-headed wolf named Cerberus, addressing biological challenges such as coordinating multiple heads for movement and feeding.

Across all portrayals, Yokota consistently exhibits a juxtaposition of dark aesthetics with genuine professionalism, a celestial origin history, and ongoing collaboration with the design team to fulfill Hell's thematic creature requirements. His character development focuses on balancing his chuunibyō affectations with practical responsibilities in project commissioning.