Meng Wu, called Mou Bu in Japanese media, hailed from Qi but relocated to Qin alongside his father Meng Ao following Meng Ao's consecutive defeats by Zhao's Ren Pa. In Qin, Meng Ao founded the Meng (Mou) family, paving the way for Meng Wu's military path.
As a youth in the Qin capital, Meng Wu forged a deep bond with a Chu prince held hostage, later known as Shou Hei Kun or Chu Zi. Their connection sparked when Meng Wu, challenging local children to fights, was bested by the prince. Discovering the boy's royal lineage shocked Meng Wu, yet he later intervened to prevent the prince's suicide after learning Chu had abandoned him. The two vowed to achieve renown together in Qin, pledging to make their names echo across China.
Meng Wu enlisted in the Qin military, aligning with Chancellor Ryo Fui's faction and rising to become one of the "Four Pillars of Ryo Fui." His extraordinary strength and combat skill propelled his rapid ascent to General. During this time, he married and fathered two sons, Meng Tian (Mou Ten) and Meng Yi (Mou Ki), entrusting his eldest son Meng Tian's upbringing to the loyal family vassal Ko Zen.
Early in his career, Meng Wu exhibited arrogance and a volatile temper. He openly dismissed revered figures like Great General Ou Ki as relics, advocating for the Six Great Generals system's revival and considering himself worthy of inclusion. His overconfidence culminated at the Battle of Bayou, where he served as Vice General under Ou Ki. Leading aggressive charges against Zhao forces, he fell into a trap orchestrated by Hou Ken, suffering heavy losses. Witnessing Ou Ki's final stand and death profoundly impacted Meng Wu, instilling newfound respect for the veteran and prompting deep self-reflection.
This experience catalyzed Meng Wu's evolution. While retaining his belief in overwhelming force, he tempered his impulsiveness and embraced greater humility. By the Coalition Invasion of Qin, he demonstrated refined battlefield judgment, employing complex tactics like the Assault Echelon formation requiring precise momentum control. He also showed willingness to collaborate with peers like General Tou as equals.
His military accomplishments solidified his status. He defeated the undefeated Han Ming, a slayer of one original Six Great General, earning promotion to Great General. He subsequently became the first member of the reinstated Six Great Generals of Qin. During Qin's invasion of Chu, serving as lieutenant general under Wang Jian, he confronted and killed the last Chu king – revealed as his childhood friend Shou Hei Kun. This clash followed Shou Hei Kun's desertion from Qin over an inability to strategize against his homeland, forcing their tragic opposition.
Meng Wu's legacy continued through his sons, both Qin generals. His protectiveness surfaced when Meng Tian was wounded by Han Ming, igniting Meng Wu's unstoppable fury. Historically, Meng Wu campaigned against Chu and later oversaw the subjugation of the Hundred Yue tribes in the south, establishing the Kuaiji Commandery.