Phantom Blade Zero · Character
Iron Fiend
Iron Fiend is Mu Xiaokui’s other personal guard and her fist teacher: a hulking master in Iron Gauntlets and the senior brother of Iron Fever. You fight him in Chapter 3 in the Village of Lu, and later he sends Soul to his old master’s grave in the snow-covered Mirrorwood.
- FactionThe Order
- Where you meetVillage of Lu, Crimson Forest
- Quests3 in the quest log
- Boss fightFight page
Who is Iron Fiend?
Hulking and stern-faced, Iron Fiend stands firm as a mountain and strikes with tremendous force. Xiaokui heard that he left his sect years ago because he would not join his fellow disciples in slaughtering innocents. Once his sect’s great foe had fallen he meant to step away from the Wulin’s turmoil, but the Order’s invitation and the rules it upheld brought him in. His creed: protect the weak, and raise your fists against the strong.
Set to guard the Young Mistress, he found her begging to learn his fists. “My fists are meant to kill. Even so... you still wish to learn?” She told him what matters is not the fist but the one using it. In her he came to see a kind heart and the strength to lead others, worth protecting with his life. Since Mu Tianmiao’s death and Soul’s flight he passes no judgment on either; the Young Mistress’s decision is his own.
You fight him in the Village of Lu. Later, at the top of the Mirrorwood Sha-Chi Tower, he and Jade Dancer are waiting again.
Who Iron Fiend is to the others
Guard and fist teacher
He guards the Young Mistress and taught her his fists. Since he entered the Order, he tells her, his fists no longer kill: they are her shield.
“The day I entered the Order, my fists ceased to kill... and became your shield.”
In-game dialogueJunior in his sect
Iron Fever lives for combat where Iron Fiend fights to protect the weak, and went through Transcension with their master’s relic to reach his master’s art. Soul takes the Iron Gauntlets from him.
Fellow guard
Together they guard and train Xiaokui and fight as one.
Every quest with Iron Fiend in it
Story
Heartless Remnants
In the Village of Lu he stands guard for Xiaokui, and you fight him there. Carry all five Red Ribbons into Xiaokui’s fight at the Lakeside bell and he joins her third phase with Jade Dancer; her second form already fights with the fists he taught her.
Tales
Use It Against Them
With Jade Dancer on top of the Mirrorwood Sha-Chi Tower: beat the two of them with only their own weapons equipped, the Fiend Saws and the Iron Gauntlets.
Tales
Heart of the Fist
At the Mirrorwood Sha-Chi Tower he knows the forest even under its snow: it is where his master was laid to rest. His master strayed from the righteous path, he says, but his heart never wavered. Find the Iron Fist Master’s gravestone in the snow-covered Mirrorwood and light incense on his behalf. A fist fragment left at the grave and one from Iron Fiend’s own gauntlets make the Worldbreaker Fist, with which Soul tempers the Iron Gauntlets.
In the game’s own words
The game’s bestiary note on each form you fight. They are folded shut because some of them give away what happens later.
Iron Fiend, Young Mistress’s Guardian
A martial artist who fights with Iron Gauntlets and the senior brother of Iron Fever. Hulking and stern faced, he stands firm as a mountain and strikes with tremendous force. Alongside Jade Dancer, he trains Young Mistress Mu Xiaokui in martial arts and serves as her guard, the two working seamlessly together.
Though the grudges of his sect had been settled, unrest still simmered throughout the Wulin. Iron Fiend had intended to step away from the turmoil, but the Order's invitation and the "rules" it upheld convinced him to join.
Within the Order, Iron Fiend took on the duty of guarding the Young Mistress. "Protect the weak and raise your fists against the strong" had always been the martial path he followed. Over time, his loyalty only deepened. In Xiaokui, he saw a clear and kind heart, and the strength to lead others. She was worth protecting with his life, and he would do all he could to help her grow.
Now the old Shadow Sovereign is dead, and Soul, one of the Shadow Edicts, has defected. The Order has been thrown into upheaval. Though Iron Fiend laments what has happened, he has no desire to pass judgment. The Young Mistress's decision is his own.
What happens to Iron Fiend
The end of the story for this character
Iron Fiend stays with the Young Mistress; as his bestiary says, her decision is his own. When Xiaokui decides to leave and build a new Order, the guards’ answer comes from Jade Dancer: Xiaokui bears a heavy burden, but they will never leave her side.
“But we will never leave her side.”
In-game dialogue
Keep reading
How to beat Iron FiendThe boss fight page- QuestHeartless RemnantsStory
- QuestUse It Against ThemTales
- QuestHeart of the FistTales
- MapVillage of LuWalkthrough for this region
- MapCrimson ForestWalkthrough for this region
- FactionThe OrderWho they are and who leads them
- WeaponIron GauntletsThe gauntlets Heart of the Fist tempers
- BossStone Hand Iron FeverHis junior in the same sect
- AllEvery character in Phantom Blade ZeroEveryone who appears in the story or a quest
Frequently asked questions
Why did Iron Fiend join the Order?
He meant to step away from the Wulin’s turmoil after his sect’s feud ended, but the Order’s invitation and its rules convinced him. He has guarded Mu Xiaokui ever since.
What is the Worldbreaker Fist?
The Soul Tempering material for the Iron Gauntlets, made from the fragment at his master’s grave and one from his own gauntlets.
Where do the Iron Gauntlets come from?
Soul takes them from Iron Fever, Iron Fiend’s junior in the same sect.
Sources for this page 1
- Phantom Blade Zero Official Phantom Blade Zero launch build: the game’s own dialogue, documents, bestiary, quest log and loading screens, read 3 November 2026. Quotes are the game’s English text, unchanged.