Appearance

Suneo is a 10 year old boy with a light skin tone, he has big rounded eyes with black pupils. He has neatly combed and well-styled black hair, he is known for his fashionable clothing choices. He is often seen wearing stylish outfits, such as collared shirts and polished shoes, his clothing reflects his desire to showcase his wealth and social status. He is also has as a slim and slightly shorter boy compared to his friends.

Characteristics

Suneo is known for his vanity, pride and occasional selfishness. He often boasts about his family's wealth, fashionable clothing, and social status, considering himself superior to his friends, as such he takes great pride in his fashion sense and is often seen wearing stylish and trendy outfits, his clothing reflects his desire to appear unique and stand out. He also has a narcissistic tendency, consistently placing a higher value on himself than others and regarding himself more superior. Despite his confidence, Suneo experiences occasional moments of insecurity, particularly when he receives challenges to his wealth and social status. He also has a tendency to call out for his mother when he finds himself in distress. Suneo is also portrayed as academically gifted and skilled in various activities. He is known for his remarkable skill and extensive expertise in mechanics and technology, he is also known to be skilled in several musical instruments. His exceptional skills and passionate interests add to his reputation as a character from a prestigious family. 

He often buys cool toys and comic books, but he never lets Nobita touch his comics and cool toys, which provokes his anger and jealousy. He frequently accompanies Gian and is often perceived as his sidekick or assistant, this is a strategic choice to enhance his own image and make himself appear more powerful. In the series, he frequently invites Gian and Shizuka to sharing exciting news & plans or destinations, but finds reasons to exclude Nobita. On the rare occasions when he does invite Nobita, it's usually with the intent to provoke him or due to Shizuka's request. Suneo shares a complex relationship with Nobita. They have a competitive rivalry, especially when it comes to gaining the attention and admiration of their friends, particularly Shizuka.

Overall, Suneo's character is a mix of vanity, pride, fashion-forwardness, skillfulness, and occasional selfishness. His character adds depth and rivalry to the Doraemon series.