Nightmare King Grimm

nightmare king grimm bosses hollow knight wiki guide 300px
Location Dirtmouth
Health 1500
Reward/s Fully upgraded Grimmchild

Nightmare King Grimm is a 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.

Nightmare King Grimm is a final dream boss that was added as part of the Grimm Troupe expansion, appearing the dream version of Troupe Master Grimm (Boss). In the back of his tent, Grimm enters a restless nightmare before being reborn by fire. The Knight must strike him with the Dream Nail and enter his dream in order to battle his dream variant, thus completing the ritual of fiery rebirth. Afterward, Troupe Master Grimm will be reborn as Grimmchild (Stage 4, fully upgraded).


Twisted spectre of scarlet flame.

"The expanse of dream in past was split,
One realm now must stay apart,
Darkest Reaches, beating red,
Terror of sleep. The Nightmare's Heart."
- Seer

Nightmare King Grimm Location

  • Location: Large Troupe Tent, Dirtmouth. Troupe Master Grimm (Boss) must first be defeated before players can encounter Nightmare King Grimm. He is encountered after Grimm asks for the second batch of scarlet flames. 


Nightmare King Grimm Rewards



Nightmare King Grimm Strategies

Strategy Writeup

Nightmare King Grimm does more damage than the regular boss. He performs a variety of very fast and graceful moves. Time your attacks in between his attacks, as he make a short pause. Keep an eye on indications for the fire pillars and spike spawns to position yourself in between its area of damage. As he makes his attacks, be prepared to dash towards him in order to make your attack. Try to read his prepping animations to anticipate his next attack. 

Attacks & Counters

Attack Counter
Phase 1
Teleport, slash Evade
Spawn Spikes Position between indicators
Fireball Rain  
Phase 2
Fire Bat Dodge
Dash Jump
Aimed Dive/ Dash This attack is aimed at your most recent location, reposition as he deals these attacks
Fire spawn pillars of fire appear like the spawn spikes



Nightmare King Grimm Notes & Trivia

The Hunter's Journal Description of the Nightmare King Grimm is a poem by the Seer


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  ♦  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  ♦  Xero  ♦  Zote the Mighty (Boss)

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