Fu

Fu is a retainer of the Xing Empire's Yao clan, a personal bodyguard of Prince Ling and the grandfather of Ling's other bodyguard, Lan Fan. Particularly wise and exceptionally skilled, Fu serves as a valuable asset to Prince Ling by utilizing his advanced combat abilities, strategic and observational expertise, and fierce loyalty to the Yao in a great many of varying situations.

Fu is first introduced into the series alongside Ling in Rush Valley, appearing from the shadows to cordon Alphonse Elric at his prince's behest in order to learn more about the Philosopher's Stone. Mistaking Alphonse's clumsy attempt to detonate the situation as a resistant show of force, Fu engages the armored alchemist in combat. Fu maintains a distinct upper hand in terms of speed, knocking Al around with ease, but is unnerved by the younger Elric because he cannot sense normal human life energy from inside the armor. When Alphonse teams up with Paninya, however, the tables turn some. Not expecting an Amestrian civilian to have a firearm built into her prosthetic limb, Fu is caught off guard when Paninya ambushes him and the resulting confusion allows Al to capture the elderly warrior with the use of alchemy, which Fu misperceives as Alkahestry, while marveling at Al's ability to perform it without a Purification Circle. Al brings Fu to where Edward has defeated and captured Lan Fan, but both retainers are able to escape unnoticed while Ling creates a diversion. The three reconvene in the town to discuss their findings. Fu apologizes for his and Lan Fan's failure, but discusses with Ling that Alphonse's lack of human life energy as well as his inability to tire out may have something to do with the immortality that they seek. He scoffs at the idea of Ling bowing his head to ask help from a commoner like Edward, despite the fact that the young alchemist clearly knows something about the Philosopher's Stone.

Fu and Lan Fan tag along while Ling ventures to Central City with the Elric brothers and Winry, but are aghast when - upon arriving in the nation's capital - they realize that Ling has once again succumbed to his bothersome habit of wandering off and getting lost. They search frantically for their prince for a whole day without any luck, but are summoned to him by way of smoke signals the following morning outside the safehouse of Barry the Chopper and Warrant Officer Vato Falman. There, Ling explains the circumstances of the wild adventure he'd had the previous night regarding his arrest as an illegal alien, prison break alongside Barry the Chopper and promise to help smuggle the wrongly convicted 2nd Lt. Maria Ross into Xing. Fu and Ling rendezvous with Maria Ros and 2nd Lt. Heymans Breda and Ling instructs Fu to enlist the help of Mr. Han - the Xingese traveler who had helped Ling and his retainers enter Amestris undetected - to help smuggle Ross out of the country. Fu and Han lead Ross to the Eastern Desert, where Fu watches over her as she hides in the ruins of Xerxes, waiting for further orders. Some time later, Han returns to Fu and Maria's hiding spot among the ruins with 2nd Lt. Breda, Edward Elric and Major Alex Louis Armstrong in tow. Away from the eyes and influence of the enemy, the party synchronizes their collected data regarding the Philosopher's Stone, the Homunculi and the government's involvement with both, after which, Fu, Han and Ross say their goodbyes and join a group of Xingese travelers also headed for the eastern empire. Maria asks Fu what kind of paradise Xing is and he assures her proudly that it is a friendly country rich in heritage and that she will be welcomed there. But noticing that she has begun to shed tears, he also warns that the trek across the desert will be severe and that she must preserve her precious fluids.

In Chapter 63, Fu returns to Amestris and waits for the Elrics in their hotel room, hoping to encounter them secretly. They take him to Colonel Roy Mustang's secret safehouse on the outskirts of town, where Lan Fan is recuperating from serious injuries sustained in her grandfather's absence. There the whole story regarding Lan Fan's lost left arm and Prince Ling's abduction by the Homunculi and possession by the Homunculus Greed comes out. Fu at first appears furious, slapping Lan Fan and berating her severely for failing in her duties and wallowing in self-pity over her maiming. But before the Elrics and Dr. Knox - the surgeon who saved Lan Fan's life - can stop the old soldier from striking again, Fu breaks down in tears over his disfigured granddaughter.

When Ed, Greed, Heinkel and Darius fight Gluttony and Pride near Centrals slums, Fu and Lan Fan come to help them. After the long fight, Fu goes gathering intelligence to Central. When Greed is fighting Wrath in front of the central HQ's gates, Fu comes to his aid and claims to have waited to meet the man who hurt his granddaughter. Greed and Fu fight Wrath but Wrath soon overpowers them and fatally wounds Fu. Greed reverts to Ling who tries to save Fu. He knocks Ling back and tries to kill Wrath with a suicide attack by detonating bombs on his chest but again Wrath wins, slashing the detonators of the bombs off and at the same time cutting through Fu's chest. This however bought time for Cpt. Buccaneer to stab Wrath through Fu's back. Fu thanks Buccaneer for help and dies. Ling wanted to revive him with the Philosopher's Stone but couldn't find an alchemist to do it.

Abilities
Fu is very skilled combatant, using Xingese martial arts and frequently Xing-made explosives. He is also master of kunai knife. Fu, like most of Xingese nobles, has ability to "sense" other peoples Qi. This gives him massive edge over most opponents, being able to sense them before seeing them. He is proficient acrobat, being able sit on speeding train carriage's roof.