Location Resting Grounds
Health 200 - 570
Reward/s 100 Essence

Xero is a Warrior Dream Boss in Hollow Knight. Bosses are special Enemies that feature their own arena, a large amount of health, and a variety of unique moves and abilities. You will need to perform multiple attacks such as using The Nail and Nail Arts along with the Spells and Abilities in order to defeat them. Some bosses are capable of entering into a state of stagger after landing a number of attacks on them.

As soon as you encounter a boss, its name will appear on the screen, the music will change into a boss battle theme, and usually,  paths connecting the arena will close or will be blocked leaving you no choice but to face these devastating and unique foes.


Lingering dream of a fallen warrior. Executed for crimes against the King.

A life defined by tragedy and triumph. A death marred by sorrow and regret. A spirit burdened by sins and memories. Better to wander the world than be cursed with glory. - Xero


Xero Location


Xero Rewards

  • 100 Essence


Xero Strategies

Strategy Writeup

Xero is the first Warrior Dream boss that you can encounter. He is easy to deal with since he only has one attack where he calls forth a projectile in the form of the nail. At first, he'll call out 2 nails where he will shoot it out towards The Knight one at a time. You can identify when he will start to telegraph the attack since he will release a grunting sound before the nail shoots down on you. However, once he reaches about 50% health, he'll call forth 2 more projectiles and he'll have an increase of attack speed. He'll still do the same method where he'll grunt before shooting out the nail allowing you to prepare to dodge for the projectile.


Attacks & Counters

Attack Counter
Phase 1
Projectile Nail Can jump on it, use a dash, or use the platforms to hide underneath it.



Xero Lore

Xero is a warrior of Hallownest who strongly believed that his strength and experience as a warrior will lead him towards greatness. Xero was infected with the plague and tried to fight it off but eventually, he succumbed to it, turned against his comrades and tried to kill The Pale King. He was executed and was buried at the Resting Grounds, upon his spirit showing, he still doesn't realize the mistake he has done and only realizes it when he is defeated.


Xero Notes & Trivia

Xero's health depends on the type of Nail The Knight has equipped.



Broken Vessel  ♦  Brooding Mawlek  ♦  Brothers Oro and Mato  ♦  Crystal Guardian  ♦  Dung Defender (Boss)  ♦  Elder Hu  ♦  Failed Champion  ♦  False Knight  ♦  Flukemarm  ♦  Galien  ♦  God Tamer  ♦  Gorb  ♦  Great Nailsage Sly  ♦  Grey Prince Zote  ♦  Gruz Mother  ♦  Hive Knight  ♦  Hollow Knight  ♦  Hornet (Boss)  ♦  Lost Kin  ♦  Mantis Lords  ♦  Markoth  ♦  Marmu  ♦  Massive Moss Charger  ♦  Nightmare King Grimm  ♦  No Eyes  ♦  Nosk  ♦  Oblobble  ♦  Paintmaster Sheo  ♦  Soul Master  ♦  Soul Tyrant  ♦  Soul Warrior  ♦  The Collector  ♦  The Radiance  ♦  Traitor Lord  ♦  Troupe Master Grimm (Boss)  ♦  Uumuu  ♦  Vengefly King  ♦  Watcher Knight  ♦  White Defender  ♦  Winged Nosk  ♦  Zote the Mighty (Boss)


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    • Xero is so underrated as a warrior spirit character, often overlooked. He’s a top favourite warrior spirit of mine - I like his design and appearance, his voice, and his character in general. I also think he might be a moth in knight’s armor - it looks that way. So tragic. He’s a good guy in his heart and soul... Infection took him like so many others, and it wasn’t fair... I will always despise the Radiance...

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