If you've ever broken open a grub cage in Hollow Knight and wondered what happens to the grubs in Hollow Knight after you set them free, you're not alone. It's one of those questions that seems simple on the surface but gets surprisingly complicated once you dig into the game's lore and mechanics.
The short answer is that rescued grubs get carried back to the Grubfather, who rewards you for your efforts. But the full story involves 46 grubs scattered across Hallownest, a bittersweet ending, and one of the game's most unsettling surprises. Let's walk through exactly what's going on.
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Quick Answer
Rescued grubs get carried back to the Grubfather in Forgotten Crossroads. He rewards you with Geo, Mask Shards, Charm Notches, and Pale Ore. After you rescue all 46 grubs, the Grubfather gives you Grubberfly's Elegy.
He then eats the grubs. The game implies they become part of him.
What Actually Happens to Rescued Grubs
When you break a grub cage, the little grub pops out and starts waddling around. You don't need to do anything special. The game automatically counts it as rescued, and that number shows up in your inventory under "Rescued Grubs."
The grub itself doesn't follow you back to the Grubfather. It just kind of… disappears from the screen after a moment. The game treats rescue as instant.
You don't carry them. You don't escort them. You break the cage, the counter goes up by one, and that's it.
Here's where it gets interesting. Every time you return to the Grubfather after rescuing at least one new grub, he gives you a reward. He's thrilled to see his children safe.
He thanks you profusely. He hands over Geo or items with genuine gratitude.
The Grubfather sits in his little burrow in the Forgotten Crossroads, just above the False Knight arena. He's a big, round, cheerful fellow who genuinely seems to love his kids. Each visit after a rescue triggers a reward and some new dialogue.
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The rewards follow a set pattern based on how many grubs you've rescued total. Here's the breakdown:
| Grubs Rescued | Reward |
|---|---|
| 5 | Mask Shard |
| 10 | Charm Notch |
| 20 | Pale Ore |
| 30 | Pale Ore |
| 46 | Grubberfly's Elegy charm |
Early rescues also give you Geo, though the amount varies. The milestone rewards are the real prize. That first Charm Notch at 10 grubs is especially valuable since Charm Notches are limited and you need them to equip more charms.
The Grubfather's Role and What He Tells You
The Grubfather is one of those NPCs who seems purely wholesome at first. He's a dad. His kids are missing.
You're helping bring them home. It's straightforward.
His dialogue reinforces this. He talks about how worried he was. He mentions how the grubs wandered off and got trapped.
He's just a relieved parent getting his family back.
But if you pay close attention, there are hints that something's off. He mentions that the grubs "return to him" in ways that feel a little vague. He talks about them being "safe with him" without specifying what that means physically.
The game never explicitly explains the mechanics of how grubs get from wherever you rescued them back to the Grubfather's burrow. They don't travel with you. They don't appear in his area.
The game just assumes they made it home somehow.
This narrative gap is probably intentional. Team Cherry left enough ambiguity that players fill in the blanks themselves. Some assume the grubs find their own way back.
Others think the Grubfather has some kind of connection to them. The game doesn't commit to an explanation.
What we do know is that the Grubfather's mood stays positive throughout the rescue process. He never hints at anything dark. He's consistently grateful, consistently cheerful, consistently dad-like.
That makes what happens at the end hit harder.
The Grub Mimic Twist You Probably Didn't Expect
Not every grub you find is actually a grub. Some of them are Grub Mimics, and this is where Hollow Knight's darker sense of humor comes through.
A Grub Mimic looks almost identical to a trapped grub. It's in a cage. It's making the same sounds.
It wiggles the same way. You break the cage expecting a rescue, and instead a hostile creature bursts out and attacks you.
There are several Grub Mimics scattered throughout Hallownest. They're placed in spots where you'd reasonably expect to find a real grub. The game trains you to associate cages with rescue, then punishes that assumption.
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Grub Mimics don't count toward your rescued total. They're enemies, not collectibles. Killing one gives you Geo, but that's it.
No reward from the Grubfather. No counter increment. Just a fight and some currency.
The existence of Grub Mimics adds an interesting layer to the grub question. It suggests that not everything in a cage is what it seems. It also implies that the world of Hallownest is dangerous enough that even rescue operations can go wrong.
From a gameplay perspective, Grub Mimics keep you on your toes during grub hunts. You can't just mindlessly break every cage. You need to be ready for a fight.
It's a small detail, but it makes exploration feel less predictable.
What Happens When You Rescue All 46 Grubs
This is the part that catches most players off guard. After you rescue all 46 grubs and collect your final reward, the Grubfather's behavior changes dramatically.
He tells you that the grubs are gone. He says they're "within him" now. He's eaten them.
All 46 grubs that you spent hours tracking down across every corner of Hallownest are inside his body.
The Grubfather doesn't frame this as malicious. He seems to view it as a natural conclusion. The grubs returned to him, and now they're part of him.
It's almost spiritual in how he describes it.
But let's be real. You just spent 20-plus hours of gameplay rescuing these creatures, and the guy you handed them over to ate them. That's the punchline.
After this revelation, the Grubfather leaves his burrow. He wanders off into Hallownest, and you can encounter him again in the Queen's Gardens area. He's still alive, still mobile, still carrying his children inside him.
This ending raises questions the game never fully answers. Did the grubs consent to this? Is this how grubs are supposed to work in Hallownest's ecosystem?
Is the Grubfather a loving parent or something more unsettling?
Team Cherry has never given a definitive answer. The community has debated it for years. Some players see it as a natural life cycle.
Others see it as a betrayal of the player's effort. Both readings are valid.
What's clear is that the game wants you to feel something about it. Whether that's sadness, discomfort, or just dark amusement depends on you.
Grub Rewards at Every Milestone
The reward system gives you a reason to keep hunting beyond just completionism. Each milestone feels meaningful, and the items you get are genuinely useful throughout your playthrough.
Here's the full reward structure:
| Grubs Rescued | Reward | Why It Matters |
|---|---|---|
| 1-4 | Geo | Small cash injections early on |
| 5 | Mask Shard | Four shards equal one extra health mask |
| 6-9 | Geo | More pocket change |
| 10 | Charm Notch | Lets you equip one more charm |
| 11-19 | Geo | Steady income |
| 20 | Pale Ore | Used to upgrade your nail to its final form |
| 21-29 | Geo | You're deep in the hunt now |
| 30 | Pale Ore | Second Pale Ore for late-game upgrades |
| 31-45 | Geo | The home stretch |
| 46 | Grubberfly's Elegy | Final charm reward |
That first Mask Shard at five grubs is probably the most impactful early reward. Extra health makes a huge difference in boss fights, and five grubs is achievable within your first few hours of gameplay.
The Charm Notch at ten grubs is equally valuable. Charm builds define a lot of Hollow Knight's combat variety, and having an extra notch opens up combinations you couldn't use before.
The two Pale Ores matter if you're going for the upgraded nail. You need three Pale Ores total to fully upgrade your weapon, and two of them come exclusively from grub rescues. The third comes from the Crystal Peak area.
Grubberfly's Elegy and the Final Reward
Grubberfly's Elegy is the charm you receive after rescuing all 46 grubs. It's a offensive charm that gives you a ranged attack when you're at full health.
The charm projects a small burst of energy forward whenever you swing your nail with all masks intact. It's not the strongest charm in the game, but it's solid for certain situations. Boss fights where you can maintain full health benefit the most from it.
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The name itself carries weight. Grubberfly suggests a transformation from grub to butterfly, which ties into the game's broader themes of change and becoming. Whether the grubs actually become something beautiful or just become part of the Grubfather is left ambiguous.
From a practical standpoint, Grubberfly's Elegy works well with charms that help you maintain health. Quick Focus, Stalwart Shell, and Thorns of Agony all pair nicely. It's not a must-have for any build, but it's a respectable option.
The real value of Grubberfly's Elegy is narrative. It's the Grubfather's final gift to you, given after he's consumed his children. That context makes it one of the most emotionally complicated charms in the game.
Common Misconceptions About Grub Fate
Players get confused about grubs for a few predictable reasons. Let's clear up the biggest ones.
Some players think grubs die if you don't rescue them quickly. They don't. Grubs stay in their cages indefinitely.
There's no time limit. You can leave a grub sitting in Greenpath for 50 hours of gameplay and it'll still be there when you come back.
Others assume the Grubfather dies or disappears if you rescue all the grubs. He doesn't die. He leaves his burrow and wanders to Queen's Gardens, but he's still alive.
You can talk to him there, and he'll comment on his journey.
A few players believe Grub Mimics count toward the total if you kill them. They don't. Only actual rescued grubs increment the counter.
Grub Mimics are just enemies with a disguise.
There's also confusion about whether the grubs you rescue appear in the Grubfather's burrow. They don't. The area never changes visually based on how many grubs you've saved.
The only indicator is the counter in your inventory and the Grubfather's dialogue.
Finally, some players think there's a way to save the grubs from the Grubfather. There isn't. The ending is fixed.
No matter what you do, the Grubfather eats them after all 46 are rescued. It's not a choice or a branching path. It's the only outcome.
Can You Miss Grubs Permanently?
No grubs are missable in the traditional sense. Every single one can be rescued in a single playthrough, and none become inaccessible after certain story events.
That said, some grubs require abilities you won't have until late in the game. Monarch Wings, Crystal Heart, Isma's Tear, and Shade Cloak all open up grub locations. If you're trying to find them all before finishing the main story, you'll hit walls.
The good news is that you can always come back. Hollow Knight doesn't lock you out of areas after beating the game. You can load your save and keep exploring.
All 46 grubs remain accessible in the post-game state.
A few grub locations are easy to overlook even with the right abilities. The one in the Royal Waterways behind the breakable wall. The one in the Hive that requires precise platforming.
The one in the Abyss that's tucked into a corner most players run past.
If you're going for 112% completion, you need all 46 grubs. There's no way around it. The good news is that your rescued grub counter tells you exactly how many you've found, so you always know how close you are.
The Emotional Weight of the Grub Story
Hollow Knight doesn't hold your hand with its storytelling, and the grub arc is a perfect example. The game presents you with a simple premise, lets you invest time and emotion into it, then pulls the rug out.
You spend hours exploring dangerous areas. You fight through tough enemies. You solve environmental puzzles.
All to save these little creatures that cry out for help. And the reward for your compassion is learning that the person you trusted them with consumed them.
It's dark. It's uncomfortable. And it fits Hollow Knight's world perfectly.
Hallownest is a kingdom in ruins, where good intentions don't guarantee good outcomes. The Radiance's influence, the Infection, the Pale Knight's failed experiment, all of it points to a world where things go wrong despite everyone's best efforts.
The Grubfather isn't evil. He's not a villain. He's just a creature following his nature, and that nature happens to conflict with what you expected.
That's more unsettling than any monster fight in the game.
Some players find the ending funny in a grim way. Others find it genuinely sad. Both reactions are valid.
Team Cherry crafted something that lands differently depending on how attached you got to those little grubs along the way.
Expert Tips for Tracking and Rescuing Every Grub
Finding all 46 grubs takes patience and a good system. Here's what works.
Use the Grubfather's hints. After each rescue, he gives vague clues about where more grubs might be. He mentions specific regions and landmarks. Pay attention to his dialogue, and you'll narrow down your search faster.
Check your inventory counter regularly. The rescued grub number updates in real time. If you think you found one but the counter didn't move, you probably hit a Grub Mimic or missed a breakable wall nearby.
Learn the Grub Mimic tells. Real grubs wiggle and make crying sounds. Mimics look almost identical but tend to be slightly more still. When in doubt, approach with your nail ready.
A quick swing won't hurt a real grub, but it'll trigger a mimic attack.
Backtrack after getting new abilities. Every major movement upgrade opens new grub locations. Monarch Wings, Crystal Heart, Descending Dark, and Shade Cloak all unlock previously unreachable areas. Make a habit of revisiting old zones.
Focus on milestone rewards first. If you're not going for full completion, grab the easy grubs to hit five and ten rescues. The Mask Shard and Charm Notch are worth the minimal effort.
Frequently Asked Questions
Do grubs respawn if you leave them?
No. Once you rescue a grub, it's gone from its cage permanently. If you leave a cage unbroken, the grub stays there until you return.
Nothing despawns or disappears.
Can you fight the Grubfather?
No. The Grubfather is a friendly NPC throughout the entire game. Even after he eats the grubs, he remains non-hostile.
You can't attack him, and he never becomes an enemy.
Is Grubberfly's Elegy worth using?
It depends on your build. If you can maintain full health consistently, it's a solid ranged option. For most players, other charms offer more utility, but it's far from useless.
What happens if you kill a Grub Mimic?
You get Geo and nothing else. The mimic dies like any normal enemy. It doesn't count toward your rescued total, and the Grubfather doesn't acknowledge it.
Are there any grubs in the Colosseum of Fools?
No. The Colosseum doesn't contain any grubs. Some players assume the trial areas have hidden collectibles, but all 46 grubs are found in the main explorable regions of Hallownest.
Does the Grubfather appear in Hollow Knight: Silksong?
Team Cherry has not confirmed the Grubfather's appearance in Silksong. Given that the sequel follows Hornet in a new kingdom, the Grubfather may not return. Fans are still speculating.