Gromb the warrior

Appearance
Colours: same colours at seer.

Clothing: Wears a suit of worn-down armour

In battle

 * Cyclone Slash: Charges up for a second and starts spinning is nail around for 3 seconds
 * Triple Nail Swing: Same as the Hollow Knight's Triple Nail Swing
 * Parry: Same as Hornet's parry
 * Nail Boomerang: Throws his nail and goes to retrieve it, leaving him vulnerable for a while

Locations

 * The Knight first finds him at the city of tears next to the nailsmith, he tells the Knight a bit about the Nailsmith and how he can make your nail stronger. After you upgrade your nail and go outside he disappears.
 * He appears again at the Greenpath Stag Station, sleeping on the bench. When you wake him up he talks about the Colosseum of Fools and asks the Knight if they have seen Tiso.
 * At the next encounter, he will be next to Tiso's corpse. He talks about how Tiso was the only one he could trust and how he feels lonely without Tiso.
 * You will then find him where you fought Hornet in Greenpath after the encounter at Tiso's corpse and he challenges you to a battle.
 * Finally you can find him in Mato's hut, training with him. When you talk to him he says that mato showed him the path of the nail and thanks the knight for everything they have done.

Aftermath

 * He can be fought as a boss in the Pantheon of Hallownest.
 * When given a delicate flower he thanks the knight gratefully for the gift.
 * He can sense his mind being read

Trivia

 * His boss theme is a mix of false knights boss theme and hornets boss theme
 * He has met Quirrel in the howling cliffs
 * He wont show up in matos hut until you get the cyclone slash and go outside