The Hataraku Saibou Myelocyte action figure stands at 140 mm tall and is designed to evoke the biology-inspired charm of the series. The body is sculpted with rounded cellular proportions, featuring a smooth, slightly translucent skin tone with gentle shading that enhances the impression of depth. The face shows awake, curious eyes and a small, friendly mouth, giving the character an approachable, determined expression. Subtle lab-inspired details are included: a tiny white collar-like accent around the neck and minimal anatomical markings along the limbs. The figure is finished with a glossy sheen on the headpiece and matte color blocks on the torso to create contrast, while red accent hints nod to its marrow lineage. The overall silhouette is compact, dynamic, and ready for display among other Saibou figures, capturing the scientific whimsy and warm charm that fans expect.

In the Hataraku Saibou universe, Myelocytes are immature white blood cells that originate in the bone marrow and progressively differentiate into mature cells that defend the body. The Myelocyte character embodies that hopeful stage, a diligent trainee who balances curiosity with the discipline of immune work. Throughout the series, such cells interact with neutrophils, macrophages, and other defenders as they rush to sites of infection, coordinate signals, and contribute to tissue maintenance. This figure captures the moment of transition and potential: a youthful agent ready to enter the bloodstream, learn vital tasks, and contribute to the body's ongoing drama of health and defense, all presented with the show's signature mix of education and playful storytelling.