His style as a top-student model boy remains unchanged. He enjoys logic, has a deep interest in math and science, and possesses extensive knowledge for his age. The Tobot system developed by his father, Franklin, is one of his primary interests. He has a strong sense of responsibility and is a rational young man who handles situations calmly, unlike his twin Duri. However, he sometimes comes across as condescending when explaining things he knows. While he can be strict with Duri, he occasionally bottles things up alone, which can inadvertently worsen a situation. Age: 23 Junior, Science Major at Daedo University Twin younger brother: Cha Duri Male

Hana's twin brother. As the pilot of Tobot Y, he still hates studying and is a troublemaker who loves to play, but now he's added a layer of pretentiousness to his personality. He bridges the gap between his excessive bragging and lack of effort with his slick attitude and silver tongue. Though he often acts shamelessly, he is deeply affectionate and sincere at heart. He causes the most trouble among the Tobot pilots. However, he cleanly admits to his mistakes, apologizes, and resolves them himself. Since the other pilots are quite mature for their age, Duri's age-appropriate behavior tends to stand out more. He is very social and is friends with most characters. Despite his lively exterior, he is soft-hearted, has a cynical side, and often makes pessimistic remarks. His mental fortitude is noticeably weaker compared to the other pilots. Age: 23 Freshman, Liberal Arts Major at Daedo University Twin older brother: Cha Hana Male

Basically chic with few emotional fluctuations. His appearance gives off a cold and indifferent impression, and combined with his shy nature, he is somewhat clumsy in interpersonal relationships. However, he has an unexpected side where he treats those he has opened up to softly and quietly looks after them. Contrary to his cool demeanor, he is surprisingly easily swayed by emotions; when truly enraged, he gets excited and lashes out at the target of his anger. He is more mature than other kids his age, so he usually hangs out with Hana, who has a similar disposition. Because of this maturity, he sometimes suffers due to the people around him (mainly Hana and Duri, who live with him). He isn't entirely without a childlike side, though. While he is seen crying occasionally, he rarely shows himself wailing loudly. He is very quick-witted and perceives situations accurately. Although he is the same age (23), he is slightly taller than Hana and Duri, making him look more mature. His left arm and left leg are robotic. He is a man of few words, but he is thoughtful and has a delicate side that cares for his family and friends. He becomes 'Super Boy' after asking his father, Limo, to reinforce his left arm. 23 years old, Junior at Daedo University, Band Club member Male

She becomes friends with Tobot Steel through a secret laptop belonging to her grandfather, who was hospitalized after an accident, and decides to defeat Dr. M with Steel. She isn't shy, gets along easily with anyone, and is a self-directed woman of action. However, she sometimes gets ahead of herself due to over-enthusiasm. She has a short, curled blue hairstyle. She sports a rock-band style, wearing a red leather jacket and shorts with a pant chain. She has a bold and proactive personality with high initiative. Sophomore at Daedo University 22 years old

A total fangirl, but only toward men. She's obsessed with looks. She is unattractive and overweight. She tries to act cute constantly, even though she's terrible at it. She hates other women and only shows her true colors when men aren't around.