Suneo Honekawa is a wealthy but academically average student who regularly flaunts his family's affluence by showcasing expensive toys, model kits, and tales of international trips. He habitually snubs Nobita, excluding him from activities with flimsy excuses while inviting Gian and Shizuka, deliberately provoking Nobita's envy. This behavior masks deep insecurities about his short stature and a bed-wetting habit he views as a humiliating secret. Despite his arrogant and narcissistic tendencies—frequently admiring his reflection—he displays pronounced cowardice in perilous situations, often crying out for his mother. His personality is heavily shaped by his family background. His father is a prominent businessman with connections to celebrities and directors, while his mother indulges him excessively. Suneo aspires to inherit his father's company, reinforcing his materialistic outlook. He has a younger brother, Sunetsugu, adopted by a wealthy uncle in New York, and a cousin, Sunekichi, who shares similar hobbies. Discipline from his superstitious great-grandmother instilled occasional superstitious tendencies in him. Within the group, Suneo acts as Gian's reluctant accomplice in bullying Nobita, primarily motivated by fear of Gian's aggression. He frequently shifts blame onto Nobita to avoid Gian's anger. However, he sometimes allies with Nobita against Gian, hinting at underlying camaraderie. He admires Shizuka's cooking and earns praise from her for his artistic skills, yet harbors resentment towards Hidetoshi Dekisugi's intellect. His interactions with Doraemon involve intense jealousy over futuristic gadgets, sometimes driving him to steal them for personal use. Across various adventures, particularly in films, Suneo demonstrates unexpected resourcefulness despite his cowardly nature. His talents in model-building, operating radio-controlled vehicles, and strategic thinking prove crucial during group crises; his piloting skills and gadget knowledge have resolved critical situations. This contrasts sharply with his initial panic and attempts to flee danger. In the short film "Doraemon Comes Back," he cruelly impersonates Doraemon to deceive a vulnerable Nobita, though he later joins Gian in celebrating Doraemon's return. Future depictions show Suneo maturing into a responsible and kind-hearted company president, shedding his childhood flaws while upholding his family's business legacy. His son, Sunetaro or Suneki, mirrors both his physical appearance and childhood behavior, suggesting a generational continuation of traits.