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Bestiary
An insatiable breeder. Has populated the Waterways with its kind. Its insides double as a nest for young Flukefeys.

The desire to breed, to leave behind a memory of ourselves in the shape of a child... it seems to be etched deep into heart of every living creature. I too have felt the pull of that base instinct.
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Behaviour and Tactics

Hollow Knight Boss Discussion - Flukemarm

Hollow Knight Boss Discussion - Flukemarm

Flukemarm Guide Video

An optional boss that floats in the center of the massive room, completely stationary and continuously spawns quick and aggressive Flukefey from its orifices, two at a time, after spitting bile from said orifices. Drops the Flukenest charm when defeated.

The boss itself does not attack but spawns enemies that are really fast and frantic and can overwhelm the Knight.

An "offensive" tactic requires upgrading the Nail enough (Nail Upgrade 3 or Higher) to kill Flukefeys in one hit or using Fragile Strength / Unbreakable Strength. Focus on killing the Flukefeys as quickly as possible and hit the Flukemarm between spawns.

A "defensive" tactic involves using Quick Focus and Stalwart Shell to buy time, Soul Catcher and Grubsong to generate enough SOUL to heal, and Thorns of Agony to help kill the Flukefeys and occasionally damage the Flukemarm itself if the player is close enough to it.

Using Desolate Dive/Descending Dark is effective as the Spell gives enough invincibility to repeatedly use the spell without taking damage.

The most important thing to avoid in this fight is falling into the water. Since the player cannot attack while swimming, they will be left completely defenseless.

An especially useful way to prepare for the fight is to break the Fluke Larva found in and around the entrance to the boss chamber as they gift small amounts of SOUL to the player when destroyed.

Flukelarva

Dream Nail Dialogue
  • ...Breed...
  • ...Kill...
  • ...Keep Away...

 Locations