Hornet

Come no closer, ghost.
I've seen you, creeping through the undergrowth, stalking me.
This old kingdom... A terrible thing awakens. I can smell it in the air
I know what you are. I know what you'd try to do. I can't allow it.

Dialogue Top.pngSkilled protector of Hallownest's ruins. Wields a needle and thread.
I have seen this nimble little creature. I thought her prey and pounced at her, but with a flash she stabbed me with her flying stinger and darted away. Could she be... a Hunter? Dialogue Bottom.png
Hornet is the mysterious princess-protector of Hallownest’s ruins, a major character in Hollow Knight and the protagonist of Hollow Knight: Silksong. She wields a needle and thread with deadly prowess.[3] As a boss, Hornet appears in two forms, Hornet Protector in Greenpath and Hornet Sentinel in Kingdom's Edge. She must be defeated twice to unlock her Journal entry, but this can be either by defeating both forms or by defeating her Protector form once in Greenpath and once in Godmaster content
Hornet is the daughter of the Pale King and Herrah the Beast, the queen of Deepnest. Her birth was the result of a bargain for her mother to become a Dreamer, and as such, she spent only a short time with Herrah.[4][5] Her shared father with the Knight and the rest of the Vessels makes them siblings.[6][7] Hornet fighting Quirrel
Raised in Deepnest,[8] Hornet survived the Infection and the fall of the kingdom. She wanders its ruins, chasing off travellers who would seek to desecrate them, but also protecting the sealing of the Black Egg. She also guards the Cast-Off Shell in the Kingdom's Edge which can grant the King's Brand, the key to the Abyss.[9] In her duties, she encountered Quirrel in the Howling Cliffs at his arrival in Hallownest. She attempted to fight him but was repelled by the mask of Monomon he wears on his head. Hornet leaves him be after recognizing the mask, knowing that he was called upon, despite him not knowing it.[10] Like Quirrel and the Knight, she sensed the awakening of the Infection and started wandering Hallownest in search of answers. In Hollow Knight, she works to stop the impending doom looming on Hallownest. In Hollow Knight: Silksong, she ends up captured and brought to the haunted kingdom of Pharloom. In-game events
Hornet appears at first as a wandering and recurring antagonist to the Knight. As their journey progresses, her involvement influences their quest in Hallownest. The Protector Hornet's first appearance
Hornet is first encountered at the entrance to Greenpath, where she observes the Knight before moving away. She is quickly seen two more times dashing away from them throughout the overgrown Pilgrim's Way. The Knight finally catches up with her at the standing stones marking the entrance to the Lake of Unn, standing by the body of another Vessel. Relating the Knight's quest to the awakening of the Infection, she denies them to pursue any further. They clash, and when defeated, Hornet flees without a word. Hornet reappears briefly before the end of the Pilgrim's Way in the Fungal Wastes, going in the direction of the City of Tears. She, later on, catches up with the Knight at the Fountain Square in the middle of the drenched capital. Finally understanding the truth behind their origin and their quest, she encourages them to learn of Hallownest's sacrifice. She then asks them before leaving to find her at the Cast-Off Shell if, knowing the truth, the Knight would still want to take part in Hallownest's perpetuation. This encounter does not occur if the Knight has defeated a Dreamer or visited either of the rooms just outside the Markoth and Hornet Sentinel boss fights. The Sentinel Hornet in Kingdom's Edge
At Kingdom's Edge, Hornet wishes to test the Knight's resolve in one more battle before entrusting them with Hallownest's future. Upon her defeat at the top of her strength, she allows the Knight to have the King's Brand burned onto their shell. She believes they would still continue their quest even after learning the truth of their conception at the bottom of the Abyss. Her trust compels her to save the Knight caught in the collapse of the Cast-Off Shell, trapped under piles of white ash. She leaves again without saying a word after saving them. Hornet by Herrah's bed
If the Knight defeated Hornet at Kingdom's Edge before facing Herrah the Beast in Deepnest, Hornet appears next to them as they regain consciousness. Unlike her other appearances, she allows herself a respite to mourn the passing of her mother. She also expresses regrets that in order to repay her debt to her mother and perpetuate Hallownest, she had to let the Knight end her existence. If the Knight has not encountered Hornet in Deepnest, she also appears at the top of the Abyss after they successfully acquire the Shade Cloak and safely return. She now believes that since the Knight ascended the Abyss unscathed, they have a choice in their journey: to prolong Hallownest's stasis, or to face the heart of the Infection instead.

You met her walking around in greenpath, and you followed her.

Too weak, little ghost...
No shadow will haunt me...
Only pity for your cursed kind.
Again we meet little ghost.