TV-Series
Description
Bi Hei is a soldier of the Qin military and a longstanding member of the Hi Shin Unit. He originates from Jouto Village, where he grew up alongside the protagonist Shin and his childhood friend Hyou. As a teenager, Bi Hei and his younger brother, Bi Tou, once tried to pick a fight with Shin but were swiftly defeated; this event unexpectedly forged a lasting friendship among the group. Physically, Bi Hei is recognized by his prominent front teeth, which have earned him the nickname Buckteeth, as well as a small goatee, dark brown eyes, and short dark brown hair that he inherited from his father. He is married to a woman named Tou Bi, and the couple has a son named Bi Tou II.

In terms of personality, Bi Hei is generally presented as a nice but relatively simple individual. His most defining trait is his cowardice; he often lacks courage and is prone to bragging and lying, frequently fabricating stories to mask his fear. This tendency to exaggerate is a notable part of his character, especially in the earlier stages of his military career. However, beneath this fearful exterior lies a deep-seated resilience and unwavering loyalty to his friends and his unit. Despite his fears, he demonstrates a genuine commitment to protecting those he cares about, often finding unexpected bravery when it truly matters.

Bi Hei's primary motivation stems from his long-standing friendship with Shin and his sense of duty as a soldier. He feels a profound responsibility to support Shin, not only as a comrade in the Hi Shin Unit but as a friend from their shared childhood. His role in the story is that of a veteran infantryman and squad leader. He is one of the oldest veterans of the unit, having been a member since its early days as a 100-Man Unit, and eventually rises through the ranks to become a 300-Man Commander leading his own Bi Hei Unit. His journey is emblematic of the common soldier's experience, providing a grounded perspective amidst the grand scale of the conflicts.

The relationships in Bi Hei's life are central to his character. His bond with Shin is particularly significant, characterized by deep camaraderie and shared history, even if he is occasionally irritated by Shin's grand ambitions and openly questions his abilities, at one point suggesting that Kyou Kai might be stronger. The death of his younger brother, Bi Tou, during the battle on the Dakan Plains is a pivotal event that haunts him and serves as a critical catalyst for his personal growth. It was in that same battle, while overcoming his paralysis to save Bi Tou from an enemy soldier, that he took his first real step toward courage, even though he could not prevent his brother's eventual death.

Bi Hei undergoes a gradual but noticeable development throughout the series. He transforms from an inexperienced and terrified recruit into a seasoned veteran and capable commander. While his fundamental fearful nature never completely disappears, he learns to act despite it, fighting in major conflicts such as the Battle of Bayou and later campaigns. This growth is not linear; he continues to struggle with his fears but consistently shows a willingness to persevere for the sake of his unit. One of the most significant tests of his character occurs when he is expelled from the Hi Shin Unit for the crime of plundering. Despite his anger at Shin for this punishment, he immediately defends his friend when another soldier speaks ill of him, proving that his loyalty transcends personal grievance.

Regarding his abilities, Bi Hei is not portrayed as exceptionally gifted or powerful in combat. He is an infantry soldier whose primary weapon is a spear. His notable abilities lie not in extraordinary martial prowess but in his endurance, his resilience, and his capacity to rally his courage in desperate moments. His true strength is his reliability as a loyal friend and a seasoned leader who has survived countless battles, earning his rank through perseverance and experience rather than raw talent.