The remains of a bug, animated by a strange force. It will instinctively leap at uninfected creatures to attack them.
The bugs of old Hallownest did not hunt their own food, they had it brought to them. That's why they were so weak. That's why their kingdom crumbled into dust and faded away!
Leaping Husks are enemies in . These reanimated corpses used to be citizens of the kingdom of Hollow Knight Hallownest. They attack creatures who are not infected by leaping at them.
Behaviour and Tactics
Meanders back and forth until disturbed. Leaps at
the Knight when in range. Only dangerous when not on level ground or near hazards, however, this can be taken advantage of and get them to throw themselves into hazards in certain situations.
Get away from me!
Your smell...Kill you...
...Where is it...?
That sweet smell...Burns...
I can't....Wake up...
You want....To hurt me?
I'll kill you!
...This ash...trapped... (corpse in
Kingdom's Edge) ...Dearest... (
Nosk's cave) ...How?... (Nosk's cave)
...Don't run... (Nosk's cave)
...You were dead?... (Nosk's cave)
...No... (Nosk's cave)
Mostly in small groups, they are found in the
Forgotten Crossroads, Greenpath, the City of Tears, and the Howling Cliffs.
Found in the Forgotten Crossroads
Found in the Infected Crossroads
Found in Greenpath near the Stone Sanctuary
Found in the City of Tears
Found in the Howling Cliffs near Joni's Repose
"These vicious, mindless ghouls were once ordinary bugs like you and me. Something below the surface has burnt away their souls and filled them with an aimless rage." 
↑ Leaping Husk
Hunter's Journal entry: "The remains of a bug, animated by a strange force. It will instinctively leap at uninfected creatures to attack them."
Kickstarter update of November 22, 2014.