Nosk

The Nosk is a secret boss found in Deepnest that guards a Pale Ore in the room beside it.

Physical Description
The Nosk when first encountered looks exactly like the Hollow Knight.

However, when it reveals it's true form, it resembles a huge spider like creature with spikes on it's back and a orange puss filled belly. It also wears the disguise it was using to trick the Hollow Knight on it's head.

Attacks
The Nosk can charge at you, screeching to warn the player before it charges.

The Nosk can also jump around in a sporadic way.

Tactics
While it may not seem difficult with only two attacks, the Nosk is speedy, leaving little time to heal. Quick focus is recommended for this alone. Try shadow dashing if you have the ability when it charges.

Trivia

 * The impostor tactic the Nosk uses to lure the Hollow Knight has worked before, as implied by the corpses in the background.
 * When it dies, the Nosk drops the same mask the Hollow Knight drops upon death.
 * The Nosk may be a reference to The Thing (from the famous movie of the same name) as it imitates others to kill. It also could be a reference to the SA-X from Metroid.