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The Flea Caravan and Lost Fleas in Hollow Knight: Silksong: A Comprehensive Guide

Pharloom, the intricate world of Hollow Knight: Silksong, teems with mysteries and creatures awaiting discovery. Among the most heartwarming and crucial for Hornet's journey are the Flea Caravan and the adorable Lost Fleas. This guide delves into every aspect of these unique NPCs and collectibles, from their initial appearance to their ultimate role in unlocking hidden endings and powerful rewards.

Hollow Knight Silksong Flea Caravan and Lost Fleas, game overview

What is the Flea Caravan?​

The Flea Caravan is a unique group of non-playable characters (NPCs) in Hollow Knight: Silksong, serving a similar role to the Grubfather and his Grubs from the original Hollow Knight. These fuzzy wanderers traverse Pharloom with a "humble wish": to gather their lost kin, described as "lovely little gentle fleas" seeking enlightenment. Rescuing these scattered fleas helps them return to the caravan and their leader, the Fleamaster. Hollow Knight Silksong Flea Caravan, a group of insect NPCs

Key Members of the Caravan​

The caravan is led by Fleamaster Mooshka, the central figure who initiates "The Lost Fleas" quest. Over the course of their journey, Hornet will encounter other significant members:

  • Varga: Another member of the traveling group.
  • Grishkin: After the caravan reaches Greymoor, Grishkin offers the Flea Brew and maintains a cauldron for refills.
  • Kratt: Found ensnared in Silk in Greymoor, Kratt runs a spa that Hornet can use to refresh herself.
  • Vog: Located in the upper reaches of the Putrified Ducts, Vog can mark the locations of uncollected fleas on Hornet's map for a fee.
  • Seth: After being defeated in Shellwood, Shrine Guardian Seth eventually joins the Fleas in Fleatopia. Shrine Guardian Seth, a key member who joins the Flea Caravan

The Lost Fleas Quest​

"The Lost Fleas" is a multi-stage side quest initiated by speaking to Fleamaster Mooshka in The Marrow. Hornet is tasked with finding 30 scattered Lost Fleas across Pharloom. These critters emit dog-like whines and barks, making them identifiable even when hidden. Many fleas are located in out-of-the-way spots, often requiring specific abilities such as Swift Step, Wall Cling, Faydown Cloak, or Clawline for access.

Hollow Knight Silksong map showing the starting location for The Lost Fleas Quest in The Marrow

The Journey of the Flea Caravan: Locations and Rewards​

The Flea Caravan's location changes as Hornet rescues more Lost Fleas, marking progression through the game's acts and offering new services and rewards.

Caravan Movement Stages​

  • Initial Location: The Marrow
  • After 5 Fleas Saved: The caravan moves to Greymoor. This can even allow Hornet to skip the Moorwing boss fight if completed beforehand.
  • After 12 Fleas Saved (and Last Judge defeated): They relocate to the Blasted Steps.
  • After 22 Fleas Saved (and Pale Lake visited): The caravan establishes Fleatopia in the Pale Lake/Putrified Ducts, a requirement for one of the game's secret endings.

Notable Rewards​

Completing stages of the Lost Fleas quest yields significant benefits:

  • Flea Brew: Obtained from Grishkin after the caravan reaches Greymoor (5 fleas). This offensive charm temporarily enhances both movement and attack speed when consumed, offering a powerful buff for combat or platforming. Grishkin can replenish it for a cost. Flea Brew reward item in Hollow Knight Silksong, a powerful offensive charm

  • Egg of Flealia: Awarded upon rescuing all 30 Lost Fleas. This blue tool decreases the cost of silk-based skills when Hornet's health is full.

  • Flea Festival: After finding all fleas and reaching Act 3, a quest called "Ecstasy of the End" becomes available from the Wish wall in Bellhart. Returning to the caravan in Putrified Ducts allows Hornet to participate in three flea games to win various prizes, including Shell Shards, Rosaries, and a coveted Pale Oil weapon upgrade.

The Festival of the Flea​

Upon progressing to Act 3 and acquiring the "Ecstasy of the End" quest from Bellhart, players can return to Fleamaster Mooshka in the Putrified Ducts to initiate the Festival of the Flea. Here, three unique games test Hornet's skills, with the goal of achieving the highest score on a scoreboard near Vog. Successfully completing these challenges can earn players valuable Shell Shards, Rosaries, and a Pale Oil.

Comprehensive Guide to Lost Flea Locations​

Tracking down all 30 Lost Fleas can be a daunting task. Here's a region-by-region breakdown of their approximate locations and what you might need to find them.

The Marrow (1 Flea)​

The first Flea is found in The Marrow. After defeating the Bell Beast, head right past the bench room into a large, spiky chamber. Climb to the top-right, then navigate left across crumbling platforms, ascending until you drop down after defeating a skull enemy. The Flea is trapped in brambles. Map showing the Lost Flea location in The Marrow, Hollow Knight Silksong

Deep Docks (3 Fleas)​

  • Deep Docks Flea 1: From the Bellway station, strike the destructible wall to the left to reveal a passage. Navigate a lava-filled room with careful timing to reach the Flea on a platform above the entrance.
  • Deep Docks Flea 2: In the same room where you acquire the Swift Step ability, use your new dash to reach the upper-left section. Hit a lever to lower a bell, then use it to jump to an elevated platform where the Flea is trapped in a cocoon.
  • Deep Docks Flea 3: Requires a Simple Key to open an ornate door below a vendor/bench. Glide down, grapple a ring, and navigate through enemies, lava, and spikes. The Flea is in a small nook above a gauntlet battle chamber. Deep Docks map highlighting the locations of three Lost Fleas in Hollow Knight Silksong

Hunter's March (1 Flea)​

After defeating the Skarrgard miniboss at The Marrow's eastern edge, enter Hunter's March. In the first vertical chamber filled with red pincushion platforms, use downward dive attacks to bounce high up to the top-right ledge where the caged Flea awaits. Screenshot of the Lost Flea location in Hunter's March, Hollow Knight Silksong

Far Fields (2 Fleas)​

  • Far Fields Flea 1: In the large central vertical chamber of Far Fields, access a lower-left corridor. This path loops to the right, leading to an opening with a dark tunnel. Enter, destroy the bone trap, defeat the ambush enemy, and free the Flea.
  • Far Fields Flea 2: From the Bellway, sprint right through a hidden opening. Ride wind currents, pogo off flowers, and avoid red spikes to find the Flea at the far right. Map of Far Fields showing locations of two Lost Fleas in Hollow Knight Silksong

Greymoor (3 Fleas)​

  • Greymoor Flea 1 (Craw Lake): Head to the bottom-right section of Greymoor into Craw Lake. Utilize balloons to pogo and bounce upward. Glide right halfway up to a caged creature and hit the lever below to free it.
  • Greymoor Flea 2 (Kratt): Kratt is found in the top-right central area of Greymoor, just below the exit to Sinner's Road. He's ensnared in Silk behind a breakable wall above Halfway Home.
  • Greymoor Flea 3: Ascend to the top of the tower on the left side of Greymoor. This often requires looping around from the right and using pogo jumps off enemies and spikes. Map of Greymoor detailing the locations of three Lost Fleas, including one in Craw Lake and Kratt

Shellwood (1 Flea)​

The lone Flea in Shellwood is found in its central chamber, past Shakra's map vendor room. Reaching it involves careful pogo jumps off white flowers while avoiding spikes and enemies. It's trapped in vines. Location of the single Lost Flea in Shellwood, Hollow Knight Silksong

Bellhart (1 Flea)​

After acquiring the Cling Grip ability by defeating Sister Splinter in Shellwood, take the right exit from her arena (or the top-right of the main elevator). This leads to a side passage in Bellhart. Pogo off bell-covered enemies to reach the top-left corner of the narrow passage, where the Flea is hidden behind a cracked wall. Location of the Lost Flea in Bellhart, Hollow Knight Silksong, hidden behind a cracked wall

Wormways (1 Flea)​

In the central vertical shaft of Wormways, locate and break a wall on the right. This path leads to a small chamber where a flying enemy has captured a Flea. Defeat the enemy to free it. Location of the Lost Flea in Wormways, Hollow Knight Silksong, captured by a flying enemy

Blasted Steps (1 Flea)​

Head to the top section of the Blasted Steps. In the corridor containing a bench and fast travel point (just before the Citadel entrance), turn left and climb the walls. The Faydown Cloak is necessary to reach this Flea. Location of the Lost Flea in Blasted Steps, Hollow Knight Silksong, requiring Faydown Cloak

Sands of Karak (1 Flea)​

Within the central horizontal corridor of the Sands of Karak, look for a fake ceiling. The walls here are lined with spikes. You'll need to spawn tree branches and then pogo off enemies to reach the upper walls where the Flea resides. Location of the Lost Flea in Sands of Karak, Hollow Knight Silksong, found behind a fake ceiling

Sinner's Road (1 Flea)​

This Flea is located on the right side of Sinner's Road, trapped within a cage. From an area with hanging cages, traverse down and right to find a partially broken cage that hides a secret path. Follow this path to the right to find the Flea's cage. Be prepared for two enemies upon its release. Location of the Lost Flea in Sinner's Road, Hollow Knight Silksong, trapped in a cage

The Slab (2 Fleas)​

  • The Slab Flea 1: In the central-left section of this prison zone, proceed past the cells until you find a round entrance. Enter to discover the caged Flea.
  • The Slab Flea 2: Near The Slab's Bellway bench. To the right of the bench, use Cling Grip to jump off the left wall and into a hidden hole to the right. Map of The Slab detailing the locations of two Lost Fleas in Hollow Knight Silksong

Mount Fay (1 Flea)​

During the ascent to Mount Fay's peak for the Double Jump ability, instead of continuing downward after a tunnel, climb the left wall. A fake ceiling hides an upper room where the Flea is trapped in ice, which must be broken. Location of the Lost Flea in Mount Fay, Hollow Knight Silksong, trapped in ice

Bilewater (3 Fleas)​

Bilewater is a hazardous region.

  • Bilewater Flea 1 (Exhaust Organ): From the Exhaust Organ's Bench, proceed right to a broken iron cage. Climb the left wall using Cling Grip, continue to the peak, then carefully descend left to a path leading to the Flea.
  • Bilewater Flea 2: Located in a hidden area on the far left of Bilewater, behind a breakable wall. It's guarded by two Snitchflies.
  • Bilewater Flea 3: In the upper-right corner of the region, near Shakra's personal quest, a fake ceiling can be passed through to a hidden corridor. Jump left and avoid colliding spiked ball traps to reach the Flea. Map of Bilewater showing the locations of three Lost Fleas, including one near the Exhaust Organ

Choral Chambers (2 Fleas)​

  • Choral Chambers Flea 1: In the leftmost vertical chamber above the Citadel Spa, navigate through spike floors and moving platforms. Use abilities like Cling Grip, Faydown Cloak, Drifter's Cloak, and Swift Step to reach the far right edge of a platform where the Flea is caged.
  • Choral Chambers Flea 2: In the second vertical chamber, examine the slanting spike-lined walls on the right side. Break a lower wall to create a wind current, then use it to ride up to a hidden nook containing the Flea. Map of Choral Chambers detailing locations of two Lost Fleas in Hollow Knight Silksong

Whispering Vaults (2 Fleas)​

  • Whispering Vaults Flea 1: In the large room to the left of the main shaft, strike blocks to move them and create ledges. From the topmost platform, cling to the left wall, then double jump, grapple, and glide to the far-right corner where the Flea is caged.
  • Whispering Vaults Flea 2 (Songclave Exterior): This Flea is in an outdoor area near the Songclave settlement. From the Whispering Vaults, take a hidden path to the right, navigating past cog wheels, traps, and spiked walls. Activate a lever to create a wind current, ride it up to the exterior, then carefully platform across golden spike traps, using sprint jumps and grapples to climb to the Flea at the end of the path. Map of Whispering Vaults showing locations of two Lost Fleas, including one in Songclave exterior

Underworks (1 Flea)​

In The Cauldron area of Underworks, southwest of the bench, descend through enemies to a lava floor. Head left to a platform to find a "cemented" Flea. Break the cement, but beware of exploding bugs. Location of the Lost Flea in Underworks, Hollow Knight Silksong, found on a platform above lava

Memorium (1 Flea)​

Ascend the Memorium past machines channeling purple lightning. A ledge leads to the topmost corridor, revealing a "big boi" Flea that triggers a boss fight. Its attacks are typically straightforward, flying in straight lines, allowing for pogo maneuvers. Location of the Lost Flea in Memorium, Hollow Knight Silksong, found near purple lightning machines

Wisp Thicket (1 Flea)​

Access Wisp Thicket from Greymoor's top-left exit. From the Wisp Thicket bench, head left to a central room. Strike the ceiling to uncover a hidden path. Platform across to a Craftmetal node, then break the left wall. This passage leads to a previously inaccessible part of the Underworks where the Flea is in the far corner, guarded by rotating spiked obstacles. Location of the Lost Flea in Wisp Thicket, Hollow Knight Silksong, found in a hidden passage

Putrified Ducts (1 Flea - Vog)​

The final Lost Flea is Vog, found in the Putrified Ducts, specifically northeast of the Pale Lake. Ensure the Flea Caravan is stationed in the Putrified Ducts. Traverse an area requiring Clawline, Cling Grip, and Faydown Cloak. Ascend into a cave, using vine monsters to pull Hornet upwards (timing is key to avoid being eaten). Vog awaits in a cave at the peak. Speaking with her will prompt her return to the caravan and progression of the quest. Map of Putrified Ducts showing the location of Vog, the final Lost Flea, and Fleatopia

Tips for Finding Lost Fleas​

  • Listen Carefully: Many Lost Fleas emit a distinct dog-like whine or bark, indicating their presence nearby.

  • Unlock Abilities: Progressing the main story and acquiring abilities like Swift Step, Wall Cling, Faydown Cloak (double jump), Drifter's Cloak, and Clawline (grappling hook) is crucial for reaching many hidden Fleas.

  • Check Hidden Areas: Fleas are frequently tucked away behind destructible walls, fake ceilings, or at the end of challenging platforming sequences.

  • Consult Vog: Once found in the Putrified Ducts, Vog offers a valuable service by marking uncollected Flea locations on your map for a Rosary fee. Hollow Knight Silksong map with Flea locations marked by Vog for easy tracking

  • Explore Thoroughly: Pharloom is a world rich with secrets. Take your time to explore every nook and cranny.

Conclusion​

The Flea Caravan and the quest for the Lost Fleas form an integral and rewarding part of the Hollow Knight: Silksong experience. Beyond the charming interactions and lore, completing this extensive collectible hunt not only provides powerful tools and buffs but is also key to unlocking significant story progression and even a secret ending. Embark on this journey, rescue every lost critter, and help the Flea Caravan fulfill their humble wish in the dangerous lands of Pharloom.