Leon Kuwata

At the beginning of the Killing School Life in Danganronpa: Trigger Happy Havoc, Leon appears to be a young high school-aged teenager, but due to the memory loss he is two years older than he believed. He has dyed orange spiked hair, a goatee that's tied into a small ponytail, and pale blue eyes. He wears a white dress shirt (in which he has modified significantly) with the collar popped up, a white shirt with a red grunge skull design, black jeans, and white platform shoes with a black sole. He accessorizes with a padlocked chain necklace, two overlapping studded belts, rings, and an oversized safety pin on his lapel. He has several piercings - his labret, his tongue, and six in his right ear.

When he was practicing baseball, he wore a standard baseball jersey with his number, 18, and his last name, Kuwata, on the back.

During his school years, he wore "supportive sports underoos". They are a pair of typical men's athletic black boxers.

His swimsuit in Danganronpa S: Ultimate Summer Camp consists of a white hoodie with a gray conifer pattern left open, revealing his pectorals and abdomen. He also sports red bermuda shorts which fade to black towards the bottom.

Leon's goatee is noticeably absent from his pixel sprites featured in School Mode and Ultimate Talent Development Plan.

Leon is a passionate, hot-blooded young teenager. He often slacked off from studying and baseball practice; however, his baseball skills were never diminished due to his status as Ultimate Baseball Star. In fact, he hated to practice, seeing no point or enjoyment in it because he was already so talented. Due to his natural physical talent, he considered even very difficult and unusual feats easy and had some trouble empathizing with people who lacked such talent, as he didn't fully realize how hard the bet he made with Kanon really was.

Despite his talent, Leon claimed he strongly hated baseball and was very determined to change his current title to Ultimate Musician. He had a tendency to complain about the several things he found uncool and gross about baseball, often without any prompting from others. He was quite arrogant, often talking about his popularity and dreams of being even more famous, considering himself a 'future superstar'. However, during his Free Time sequence, he implied he wasn't actually very good at being a musician, and the reason he wanted to become one is to win a heart of a girl he happened to meet at the hair salon. He claimed that being popular is the whole point of being a musician, and once briefly thought about being an actor instead if that's what Sayaka is more into, generally appearing a bit confused about his own motivations and feelings for the matter. Furthermore, he was quite bitter about how people constantly forced him to play baseball and follow the sport's traditions due to his natural talent, with his completely new goal and look appearing to be at least partially a form of rebellion.

However, in reality, Leon grew to miss baseball after not playing for a while, since he used to do it every day since he was young and it actually made him feel good. He reluctantly admitted this to Makoto during his Free Time in School Mode, as he needed someone else along with him to properly play. With all his talk about hating baseball, he was embarrassed to admit how he really felt and accused baseball of brainwashing him. He considered returning to his old team, though he still absolutely hated the idea of practicing. During his School Mode ending, he decided he would both play baseball and sing, to become 'the ex-baseball star who's a totally famous singer now' later in life. He liked the idea of an all-new approach that is just for him, showing that he just disliked repetitiveness and other people deciding things for him.

Leon was also strongly interested in girls and bragged about his great success with women to Makoto, asking him if he was jealous. While it was left ambiguous how truthful his claims were, it was confirmed in Ultra Despair Hagakure that he was indeed a 'player' with a new girl with him every few days. He was always flirting with girls and he was single-mindedly focused on studying "the secret of success with the ladies". He appeared quite shallow, as he often only talked about how hot girls are, but he has also mentioned he's into pure-hearted girls and he was grossed out by Hifumi's very perverted behavior, thinking it goes way too far.

In the official artbook, Leon is described as an optimist who wants to get better at everything he does. However, during the main story, Leon was shown to be easily intimidated due to the killing game situation, such as when Makoto spent time with him for the first time and he thought it was a trap to kill him, or during the first class trial when he asked and found out who Sakura Ogami is. When he became nervous or intimidated, Leon tended to smile awkwardly, often the right corner of his mouth stretching farther. He could also come across as easily offended and agitated; for example, when asked how he managed to style his hair, he immediately became annoyed, automatically accusing Makoto of making fun of it and saying he should shave his hair like his baseball team made him do. He also instantly became angry and snapped at Makoto for not knowing what to talk about, and he often had quite intense expressions. School Mode also showed that whenever he's upset or depressed, Leon liked to take naps. According to Kazutaka Kodaka, Leon can't stand the heat and hot weather.[10] During Ultra Despair Hagakure, Leon showed a more patient and kind side, as he couldn't help but sympathize and worry about Kanon despite her obsessively being in love with him, with him wondering multiple times that's he's probably being too nice and once commented that it's no wonder Kanon liked him so much with how nice he was.

Leon is a natural-born baseball star despite his hatred towards baseball practice. His only motivation to play baseball is to become famous with girls. It also helps him to continue his school life without studying hard and taking the entrance exam. Leon's talent in baseball surpasses even his coach and teacher's pride who begged him to play so that the team could win a quick and easy win. He states that he never needs to practice because baseball is so easy for him. His pitch is clocked at 160 kilometers per hour.

Leon proves his skills with his talent during his murder of Sayaka when he threw a crystal ball through the Trash Room gate to activate a small button on the incinerator at nearly thirty feet away, followed by throwing his own blood-stained shirt into the small opening.

In Danganronpa 2: Goodbye Despair, during one of Nekomaru Nidai's Free Time Events and the Prologue, he mentions a baseball star he used to train that went on to become extremely popular, heavily implying it's Leon.

As seen in his Dorm Room, he has an amp and electric guitar, his skills with it, however, are unknown. His goal is to be the lead vocalist of a band, and was seeking out a songwriter.

He seems to be knowledgeable about some aspects of the musical scene. During his Free Time he makes several references to real-world bands. He claims he "doesn't wanna be a George, ya know? Gotta get that Paul action", referring to the British band The Beatles, he also states he wants to be like punk bands The Damned, The Clash, and The Sex Pistols.

He follows up during a Free Time Event with "if you're in a punk band, it doesn't matter if you can play or not", implying he's not very good.