Ryu is the epitome of a present day ninja, his Legendary Black Falcon outfit's sleek design is similar to that of the modern special ops agent, while the tabi boots, ninja head piece, mask, scarf and shin/forearm guards are reminiscent of the ancient ninja warrior.
Physically, Ryu Hayabusa is a young man in his early 20s, standing at 5'10" and weighing in at 172 lbs. He is in peak physical condition with a muscular build. As a ninja, most of his costumes and attire conceal his face, revealing only his eyes, one of his most distinctive features. Ryu's eyes feature vibrant green colouration with a slight golden hue. This golden hue feature is more prominent accompanied with his wardrobe composed of mostly dark colours, something that points out even more of his peculiar eyes and gives him an intimidating appearance.
Underneath the ninja mask and hood reveals a youthful face, and brown hair held in a ponytail, a completely opposite appearance to what many would expect, given his deadly skills and calculative, savage brutality in battle.
As a ninja, Ryu ruthlessly kills his enemies without mercy, executing them in a very cold, technical and calculative fashion. His rigorous upbringing in tandem with the many hardships and tragedies he has suffered, has forced Ryu to harden his emotions and disciplined his skills to perfection. He is undaunted by the lives he must take in order to protect the balance within the world, knowing that balance of the world is more important.
Ryu knows life following the ninja path can be both cruel and short, especially for one of the Dragon Lineage. He has already felt first hand the brutality of this life; watching Kureha, his best friend murdered right in front of his own eyes, his clan massacred and he himself killed as he tries to save his village. Ryu endures these hardships with his unstoppable will, an indomitable spirit shown in his exploits as he overcomes every challenge and obstacle, surviving even the trauma of death to return and exact his vengeance.
Though Ryu cares little for his enemies' well being, he still respects them on a warrior basis, even having mutual respect with some adversaries such as Genshin. Outside of battle, Ryu is modest and refined, he is popular among the local residents in his village. Not only as a strong role model for ninja in training, but he is heralded for being kind and gentle, as he cares for the safety of every resident in his home.
Ryu has the demeanour and wisdom of a man far older than himself, an understanding of the world around him and the balance of power within it. He ignores the pursuit of power to the dismay of his uncle Murai, showing no signs of curiosity for the dark powers that dwelled within the Dark Dragon Blade. When given a choice, he chooses to destroy it rather than consume its immense dark powers. Ryu also refused to keep its divine counterpart the True Dragon Sword, knowing this weapon's existence upsets the delicate balance of the peaceful world.
Overall, Ryu's exploits have given him an attitude far removed from most others as he understands things in more abstract and philosophical terms. He adopts a tranquil nature, free flowing most of the time, but unforgiving and crushing when roused.