Gonta is a very tall and muscular teenager with tanned skin. He has a noticeably angular face and very long, unkempt green hair, with noticeable prominent curls at the top of his head that resemble ahoges. He has red eyes and wears round glasses. Gonta wears a white shirt, a brown school blazer and matching brown pants, a dark, lime-green tie, and is barefoot. He carries a bug box strapped over his shoulder which rests at his hip. The strap is a light green, nearly matching his tie's color. He has a silver button on the lapel of his blazer, showing the insignia of his previous high school, and gold cufflinks. As his appearance suggests, Gonta has incredible, superhuman strength, but he is gentle and kind, once saying that he would never hurt even a bug. His stoic face is especially fierce, with his brows knitted and frown very apparent, supposedly due to his upbringing in the wild. Gonta likes animals very much, especially insects, and he can even speak with them. He is a kind-hearted, gentle, and polite person. He is very pure and naive, as he easily believes strangers and can get easily discouraged by other people's comments. When he is accused of being the culprit, he answers with complete honesty even if it makes him look much more suspicious. He also does not seem to understand sexual matters very well, as after seeing a half-naked Miu he states he got a "weird feeling", and he assumes being "horny" means something like having horns on your head. Even his uncharacteristic "keep you up all night" line during the Love Suite scene appears to be a case of misinformation. He himself acknowledges and often points out that he is dumb, which is one of the reasons why he listens to other people so much. Naturally, he strongly dislikes killing and cruelty, which can rather easily make him cry. However, despite his gentle nature, he can turn very angry if he sees or hears someone hating on insects, and he believes bug lovers can't be bad. Due to his strong love for bugs, he is often seen searching and yelling for them to come out, claiming that he wants to talk with them. In order to repay his woodland family, he aims to become a true gentleman. Gonta wants to be useful to others, but he prefers not to do physical fighting and violence. He also gets very ashamed of himself if he does something a gentleman wouldn't do, like telling lies, losing his temper, making rude assumptions, seeing someone naked or half-naked, or accidentally touching someone inappropriately. It's noted that he isn't very gentlemanly yet, as he's a bit clumsy and sometimes gets controlled by sudden and strong emotions (which is implied to be a result of being raised in the wild), but he tries very hard. He occasionally gets very scary with intense expressions, especially when talking about bugs or if he is otherwise upset or frustrated, making other people afraid. He sometimes does not seem to notice that he is unintentionally scaring others, while during some other moments he can be very perceptive of others' feelings. He sometimes fears he might never become a gentleman and he can be very hard on himself. He doesn't seem to acknowledge many of his past or current accomplishments, thinking they're just some things all gentlemen would have done. Because he spent his childhood in the forest, Gonta is lacking general cultural knowledge and in the English version even has trouble with language, and so he often has trouble speaking with the other students. This is made worse by his intimidating appearance, which made him somewhat of an outcast even when he was a very young kid. Because of this, he doesn't like to start conversations, and he is shown to be very grateful whenever someone else approaches him, saying "thank you" as in "thank you for talking to me". He also has notable difficulties with understanding the virtual world and computers, so much in fact that the other students often don't even try to explain it to him, though he does seem to understand television and movies. Due to his background, he prefers being barefoot over wearing shoes. He also prefers sleeping naked for the same reason—however, after Kaede points out that it isn't very gentlemanly, he supposedly tries to change this habit.