Troupe Master Grimm's Journal Entry wrote:
- Master of the Grimm Troupe.
- "Through dream I travel, at lantern's call
To consume the flames of a kingdom's fall"
- Grimm
Nightmare King's Journal Entry wrote:
- 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
Troupe master, king of nightmares, devourer of dreams (he's a vampiric moth), Heart of Grimm...and Final Boss, of the Grimm Troupe DLC. In many ways, a counterpart to Radiance, the goddess of dreams.
Despite the intimidating conceit of the Troupe, Grimm is a rather friendly fellow, treating you pleasantly throughout the course of the ritual. Even during a "dance", he's quite respectful, as he attempts to bow at the start of the battle. However, if you attack him while bowing,
and raocow has done this every single time, he screams and immediately begins his Flame Spawner attack. Grimm, Wyrm, and Root all seem to be familiar with each other as well, based on Grimm's Dream Nail dialogue about the strength of Wyrm's discarded vessel, and Root's interaction with Grimmchild.
The troupe travels at the call of the lantern, harvesting the flames of nightmares from dying lands in an eternal cycle. A cycle of self-preservation, the endless song of the Grimm Troupe:
Yes, it's literally a song, each verse is in a Grimmkin's journal entry.
Grimm gives you his child after instructing his kin to collect the flames of lost dreams, telling you to feed the child with the flame. Feed, then dance, then feed again. After collecting the last of the flames, you'll find the inside of the circus tent, extremely quiet, not a soul in sight. Exploring further inside lets you find Grimm asleep in his chamber (upside down like a bat), where you have to Dream Nail him to enter his Nightmare, where you eventually find the true form of Grimm, the Heart.
All members of the troupe are part of the Heart itself, connected to the ritual, and their lifeless masks can be found when the tent is quiet. Everyone is a slave to the ritual all the same, even the Troupe Master. As the Nightmare King dies in the ritual, the flames are fully absorbed by the Grimmchild, whose description changes to represent this:
Grimmchild wrote:
- Symbol of a completed ritual.
- Contains a living, scarlet flame.
Similarly, Root also takes note, with different dialogue from when she observes an immature Grimmchild/Carefree Melody:
White Lady wrote:
Your companion's eyes burn with a familiar flame... Success then for the scarlet heart, and irony, to use my spawn to grow its own.
I know you creature, and the form time shall bring. You may be all and one, clan and master, but this land shall never bear so foreign a king.
Root doesn't love him, but evidently she doesn't despise him either, as she allows Knight to participate in the ritual as long as he doesn't renege on his task for the kingdom.
The Heart of Grimm lives on in the child, and so does the troupe. You gain a powerful companion in the process.
Ultimately, that's it. No actual consequences result from the ritual, that we can observe at least. Grimm, by virtue of what we know, doesn't seem to be evil in any way.
Like his Troupe Master form, Nightmare King also has diverging Dream Nail dialogue between his initial appearance and Godhome.
Nightmare King wrote:
- In dreams... Born anew...
Nightmare King in Godhome wrote:
- Gods... bound by ritual...
- Deepest power... the Heart...
- Scattered lands... Nightmare binds all...
If I was asked to describe the fight in all of Hollow Knight that feels the most like a "duel", I'd answer Grimm. Attacking extremely fast with claw, kick, and fiery magic, Grimm feels very much like an opponent on the same playing field as I am, dodging and sneaking in hits the same way. The fight is entirely about observation and reaction, incredibly difficult, but entirely fair. Absolutely my favorite boss.
I hope this wasn't too much, but literally the entire DLC is lore for him, so I had a lot to cover.