Matsuda Yasuke

Yasuke Matsuda is a third year student in Hope's Peak Academy in class 77-A. He is 18.

He has a tall, slender and slightly lean figure, with that his face usually wears a signature apathetic gaze and this expression is more emphasized with his distinct, heavy-looking eyebrows that are usually furrowed. His face is also described as unhealthy-looking, supposedly because of stress, but he is mentioned to be “good-looking”. He has long-neck length messy black hair, which is mentioned to be silky and soft. His eyes are pale blue and he has long eyelashes. He is described to have a somewhat pale complexion, long fingers, and thin, small lips.

Yasuke's attire consists of a half-tucked in, dirty white dress shirt and a sloppily worn black tie that is adorned with red decals. His lower-half consists of black trousers, a belt, and bathroom slippers.

Yasuke is described as a "sharp-tongued brainiac". However, he is best known for his sharp wit, sarcasm, and perpetually disgruntled demeanor. Despite his young age, he is an exceptionally skilled neurologist, recognized as both a neurosurgeon and neuroscientist of remarkable expertise. While he is capable of maintaining a professional and composed demeanor, he has a short temper and, when provoked, can be cuttingly harsh and intimidating.

He is quite mean and rude, carries a dry sense of humor and an unapproachable, hostile attitude. He also displays a sense of boldness and a lack of respect for those that he deems to be deserving of contempt, even if they may be indviduals of authority. A prime example of this would be The Steering Committee, and how he was able to intimidate them by fearlessly standing up to them in an intense momentum of anger. According to Ryoko, he may be cold and blunt, but he doesn't treat her with fake sympathy.

Emotionally distant, Yasuke has only ever been close to two people—his mother and Junko. The tragic circumstances surrounding all three seem to have shaped his bitter and depressed disposition. He was forced to watch helplessly as his mother succumbed to a debilitating illness that caused severe memory loss. Junko, in turn, became consumed by an obsession with despair, a condition that, in his eyes, mirrored his mother’s descent into madness.

Yasuke is particularly protective of Ryoko.

Yasuke is the Ultimate Neurologist. As a result, he has a very broad and extensive knowledge for the human nervous system and the brain.

As an extension of his Ultimate Neurologist abilities, Yasuke's research led him to develop an experimental treatment that allowed him to repress a person's memories from a specific time period. he also has a precise aim when throwing sharp objects.