Mr. Nilson is a middle-aged, upper-middle-class man who is well known in the City of London as a financial professional. He leads a highly ordered life dictated by clocks, morning newspapers, social reputation, and rigid daily walking habits. Beneath his firm cheeks and neat brown mustache, he suffers from an unacknowledged emotional emptiness just beneath his fifth rib. He attempts to manage this discomfort by pacing his garden path and analyzing his diet.

Mr. Tandram is the next-door neighbor of five years who acts as an exact mirror image to Mr. Nilson. He possesses identical physical features, including clear grey eyes, firm cheeks, and a neat mustache. He carries his morning newspaper clasped securely behind his back while strolling through the manicured garden. He operates in the same financial district and reflects the same heavily conditioned upper-class manners.

Mrs. Nilson is the unseen wife of the protagonist, living in their fashionable Campden Hill home. She exists firmly in the background of a highly regimented domestic routine. Her primary narrative function is tied to the medical advice she passes along for treating physical ailments. This detail establishes the clinical, unromantic nature of the household.

Mrs. Tandram is the unseen wife of the neighboring financial professional. Despite living adjacent to the Nilsons for half a decade, she has never socialized with them. Her absence emphasizes the deep social alienation and rigid boundaries prevalent in their affluent London neighborhood.

The Japanese Quince is an exotic, ornamental flowering tree planted in the manicured Kensington garden. It glows and quivers as if appreciating the attention of the two pacing men, providing a vibrant burst of life. The blooming plant offers a sharp contrast to the black-and-white, predictable routines of the financial workers who stop to inspect it.

The Blackbird is a local songbird resting in the garden's exotic tree. It chants out its heart uninhibitedly, capturing the attention of the neighborhood's residents. The animal stands in direct opposition to the emotionally guarded humans who regulate their breathing and hide their feelings.