In the series, Ash is the main protagonist who possesses a unique set of skills and abilities that make him stand out from others. He has one half-brother named Griffin, whom he refers to as "Griff," with whom they share the same father. At eight years old, Ash left his home in Cape Cod due to social pressures and was taken under the wing of Papa Dino, leader of the Corsican Mafia. Since then, he has been trained and groomed to take over as the head of the organization, despite having no interest in doing so. The manga is largely focused on Ash's attempts to escape Papa Dinos wishes for him.
Ash is often described as "beautiful" by other characters due to his shaggy platinum-blond hair, pale green eyes, and slender figure. However, his personality is quite different from his physical appearance. He has a snarky attitude, is reckless, and seems coldly capable of killing, which has earned him many enemies. Despite this, Ash's intelligence and charismatic leadership have won him numerous connections that he enjoys exploiting.
Ash possesses several special skills, including good marksmanship, the ability to hack 1980s computers, and a sixth sense for being followed. Although he did not finish high school, Ash is an avid reader who has taught himself advanced math. He can also come across as quite cultured when he chooses to do so. Overall, Ash's unique combination of skills and abilities make him a formidable character in the series.