Calico serves as the assistant to Chief Gooley, the head of the 3WA’s Local Office, making him a recurring support character within the organization. He is a young man with blonde hair of ear length, black eyes, and typically wears eyeglasses along with a standard-issue suit. As an adult male in an agency primarily focused on its female operatives, Calico’s role is largely administrative and supportive, though his ambitions extend beyond desk work.

In terms of personality, Calico is characterized by a notable gap between his theoretical knowledge and his practical application. He is an eager and by-the-book agent who performed exceptionally well in the training academy, demonstrated by his high grades. However, this book intelligence has not translated into competence in the field. When given the opportunity to operate outside of his clerical duties, he displays a distinct lack of practical experience and situational awareness. He is prone to rash actions, such as prematurely firing a rocket launcher at a non-combatant robotic dragon, and his overeagerness often leads to reckless mistakes that endanger himself and his partners. Despite his clumsiness, he maintains a professional demeanor and a strong sense of duty, believing that criminals should face the full extent of the law.

Calico’s primary motivation is professional advancement and a desire to prove himself as a competent agent. He is frustrated by his confinement to an office role and seizes any chance to join active missions, hoping to secure a promotion. His role in the story is primarily functional: he acts as a temporary partner for Kei when Yuri is unavailable, which creates a different dynamic for the Lovely Angels. He serves as a comedic foil, his earnest but bumbling nature contrasting sharply with the chaotic but effective methods of Kei and Yuri. He represents the official, bureaucratic side of the 3WA that the Lovely Angels frequently clash with, though his lack of authority makes him more of an obstacle they can manage rather than a true superior.

His key relationships are defined by this dynamic. As Chief Gooley’s aide, Calico is a subordinate and protégé, though his desire for field work often puts him at odds with his superior’s safer assignments for him. His relationship with the Lovely Angels, particularly Kei, is strained by his incompetence. Kei is frequently frustrated by his recklessness and lack of field instincts, having to save him from his own mistakes. Yuri similarly holds a low opinion of his abilities, immediately recognizing that he is not up to the task of a dangerous mission. The Angels do not respect his authority, and in a notable instance of character interaction, they blackmail him into dropping charges against sympathetic criminals by threatening to report his numerous errors to Gooley, which would ruin his chances for promotion.

The character sees limited development due to his supporting status, but his primary experience in the field serves as a harsh lesson. His foray into active duty during the counterfeit money case is a catalogue of failures that highlights his unsuitability for frontline work. He learns that theory and practice are very different, and his idealistic view of law enforcement is challenged by the Angels’ more pragmatic and empathetic approach to justice. As for notable abilities, Calico is academically intelligent and possesses the technical knowledge expected of a trained agent, which qualifies him for his administrative duties. However, his notable "abilities" in the narrative are largely negative: he is exceptionally skilled at making tactical errors, activating dangerous machinery by accident, and requiring rescue, which solidifies his role as a liability in the field rather than an asset.