Macrophage appears across multiple franchise continuities, varying by host body and specific media.

In the main continuity, Macrophage is a female cell fulfilling diverse roles. Outside blood vessels, she operates as a macrophage, donning a 19th-century nurse-inspired uniform with a frilled dress symbolizing pseudopodia projections. Inside vessels, she functions as a monocyte, adding a hazmat suit over her attire. Her duties encompass eliminating pathogens, cleaning dead cells and debris, and relaying antigen information. Within the bone marrow, she instructs developing erythroblasts. Typically polite and gentle, she transforms into a ruthlessly efficient combatant during pathogen encounters, eliminating threats without hesitation using weapons like machetes or blunt instruments. Her abilities include phagocytosis for analyzing or consuming foreign cells, exceptional strength against bacteria, and proficiency with edged and blunt weapons.

In *Cells at Work! Lady*, a separate continuity, Macrophage is a male cell residing in a female host. He wears a tailored suit with coattail, gloves, and glasses, occasionally adding a mobcap during cleaning. He exhibits extreme devotion to the host's well-being, enforcing rigorous cleanliness standards in his lymph node and reacting strongly to lapses. This dedication includes celebrating the host's "monthly birthday" and maintaining detailed journals tracking biological events and benign entities like the "Princess." Skilled in cooking and baking, he often prepares desserts for gatherings. While primarily using knives in combat, his protective zeal sometimes strains friendships with Killer T, B cell, and other macrophages, though rifts are typically short-lived. His abilities mirror other macrophages, including phagocytosis and pathogen analysis.

Across portrayals, macrophages adapt to different tissue environments and display a dual nature of nurturing caregiving and lethal pathogen response.