Shotaro Kaneda is the central protagonist of the Akira narrative. He is a sixteen-year-old delinquent who serves as the charismatic and fearless leader of a youth motorcycle gang known as the Capsules.

His background reveals that he grew up in an orphanage, where he first met and befriended Tetsuo, a younger and weaker boy whom Kaneda felt compelled to protect. By the time the story takes place in Neo-Tokyo, he has forged a reputation as a brash, hot-headed, and arrogant teenager who is largely unconcerned with societal rules and formal authority. Often described as a self-proclaimed healthy and excellent delinquent, Kaneda is a young man who acts on instinct, preferring to use his fists or his wits to solve problems rather than follow orders.

Despite his cocky and sometimes womanizing exterior, Kaneda possesses a fierce sense of loyalty and a protective instinct toward his friends. His primary motivation throughout the story is rooted in his complicated relationship with his childhood friend, Tetsuo. When Tetsuo gains devastating psychic powers after a motorcycle accident, Kaneda initially tries to maintain their friendship, but is driven to intervene as Tetsuo becomes increasingly unstable, violent, and power-hungry. He takes it upon himself to stop Tetsuo from destroying everything and everyone around him, driven by a personal sense of responsibility for his friend's actions.

His role in the story evolves from that of a small-time gang leader engaged in turf wars to a key figure in a much larger conflict involving military conspiracies, psychic researchers known as the Espers, and a terrorist resistance movement. He becomes entangled with this resistance, particularly through his relationship with Kei, a headstrong young woman fighting against the government. Their partnership, which begins with mutual distrust, gradually develops into a strong romantic bond as they work together to survive and confront the growing threat posed by Tetsuo.

Key relationships define his journey. His dynamic with Tetsuo is the emotional core of the narrative, shifting from camaraderie to antagonism and tragedy. He shares a deep, brotherly bond with his fellow gang members, such as Yamagata, whose death at Tetsuo's hands becomes a major turning point. His interactions with figures like the military's Colonel, who represents the strict, corrupt authority Kaneda instinctively rebels against, further highlight his character.

Kaneda undergoes significant development over the course of the narrative. He begins as a relatively selfish and carefree teenager, someone who uses others for his own amusement and lacks a broader perspective. As the story progresses and he witnesses the horrific consequences of uncontrolled power and the suffering of those around him, he matures. He transitions from fighting only for his gang to fighting for a greater good, demonstrating a growing sense of responsibility and a willingness to make personal sacrifices to save Neo-Tokyo and stop Tetsuo.

While he possesses no psychic abilities, Kaneda is notable for his remarkable physical courage and exceptional skill as a motorcyclist. His most famous possession is his customized red motorcycle, which he pilots with breathtaking agility and speed, often using it as his primary weapon and tool in combat. He is a proficient street fighter and a natural leader, able to rally others to his cause through sheer force of will and confidence.