Carson D. Carlson operates as a Vizorium smuggler, initially targeted alongside his crew by the Lovely Angels, Kei and Yuri. He alone slips away during their confrontation. His path intersects with the Angels again on Agerna, where he scours abandoned mines. This encounter sends him tumbling down a ventilation shaft into the steam-filled bathhouse. He plunges into Yuri's bathwater, gets kicked into Kei's tub, and grabs Kei's breasts before being knocked unconscious, leading to his arrest.

Forced into a temporary alliance after mutant creatures attack, Carson aids Kei and Yuri. Their escape route costs him his clothes, leaving him in his underwear while Kei wears his outfit. Captured by Professor Wattsman, Carson reveals his true goal on Agerna: stealing a prized bottle of vintage World War II-era wine from Wattsman's butler, Bruno.

Rescued and re-equipped, Carson dons a 3WA uniform and arms himself with a combat knife. He confronts Bruno in a decisive knife fight, defeating the butler and securing the wine, though not without injury. In a move resembling a sacrifice for the Angels' escape, he stays behind to face advancing threats, later confirmed to have survived.

After Wattsman's defeat, Kei acknowledges Carson's attractiveness but prepares to arrest him for smuggling, producing handcuffs with a smile. Carson dismisses the gesture, implying the cuffs wouldn't hold him, leaving his capture ambiguous.

Carson's combat style mirrors his personality: reactive, adaptable, and defined by fluid yet precise movements. His knife duel with Bruno showcases anatomical realism blended with motion smears and dynamic effects, emphasizing his proficiency and calm precision under pressure.