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How to use this enemy guide
Monster names vary between guides, and some are descriptive labels rather than confirmed in-game names. The roster below combines community guide entries and preserves common aliases. Treat uncertain entries as reported sightings, not a guarantee that they spawn in every version or run.
For each creature, focus first on its cue and immediate threat. Some enemies directly attack; others separate teammates, restrict movement, or force a rescue task. Those indirect effects can be just as dangerous when the group is trying to reach the diving bell.
Enemies with reported behavior and counterplay
Angler
Community roster entry. The reviewed sources do not establish a reliable identifying cue or avoidance tactic for this entry.
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Big Slap / Tall Monster / Tall Man
These are reported as alternate labels for a tall creature. The reviewed sources do not establish a consistent behavior description or countermeasure.
Bomber
Clue: A low-to-the-ground creature that follows players. Threat: It throws bombs, and a confined area can leave little room to evade. Response: Keep space to maneuver and avoid getting boxed into tight passages. This behavior and tactic are described in a community guide, not official documentation.
Barnacle Ball / Tentacle Monster / Gravity Monster
Community roster entry with several labels. The reviewed sources do not establish a dependable cue or response.
Dog / Robotic Dog with gun / A.S.T.R.A. / Robot Attack Dog
Clue: A red sensor light is reported as a sign of the gun-equipped sentry. Threat: The dog attacks after detecting a player. Response: Avoid its line of sight and move to cover. This tactic comes from a community guide and is not official documentation.
Ear / Ear Monster
Clue: The creature is reported to pursue sound. Threat: Noise can draw it toward the team. Response: Move quietly when it is nearby. A community guide also claims microphone noise may repel it, but that behavior is not established as a reliable counter; do not depend on it as your only escape plan.
Eye Guy
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Flicker
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Ghost
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Knifo / Knifa / Knife Ghost; Ultra Knifo / Ultra Knifa; Grown-Up Knife Ghost
Clue: The Knife Ghost is described as a stalking knife-wielder. Threat: Repeated stabs can damage a player, and a community guide reports attacks can happen topside near the diving bell. Response: Do not assume reaching the surface or bell makes you safe; keep moving and coordinate with teammates while retreating. The aliases and behavior are community-guide labels, not confirmed official names.
Slime / Jello / Jelly / Slime Critter
Clue: It can engulf a player. Threat: A community guide says it may carry the player away and drop them unharmed after a few seconds. The main risk is separation or being left near another enemy, rather than immediate damage. Response: Teammates should keep track of the captured player’s location and be ready to regroup after the drop.
Larva / Snatcher
Community roster entry. The reviewed sources do not establish a consistent behavior description or countermeasure.
Mouthe
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
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Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Snatcho / Shadow Monster
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
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Spider
Clue: Webbing is the main reported hazard. Threat: Webs slow movement, leaving a player vulnerable to the spider or another monster. Response: Avoid getting caught in webbed areas where possible; if slowed, alert teammates so they can account for your reduced mobility.
Toolkit_Wisk / Whisk
A community guide lists Toolkit_Wisk and Fan, Hammer, Vacuum, and Iron variants. It specifically says those variants were found in game files but were not currently accessible in the game when the guide was written; its images were captured using a mod that summons monsters. Do not treat those variants as ordinary encounters based on that evidence.
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Weeping / Captcha Trap / Iron Maiden
Clue: The creature is described as a trap that captures a player. Threat: The trapped player is given a CAPTCHA-style rescue task, making escape a team problem. Response: Teammates should stay ready to help with the rescue. Guides differ on the time limit and number of attempts, so no exact countdown is dependable across versions.
Snail / Zombie / Snail Man
Clue: Slow pursuers that may appear in pairs. Threat: They can close in from different directions, making a single escape route risky. Response: Break line of sight and use obstacles to evade; keep an eye on where the second pursuer is before committing to a path.
Arms
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Fire Monster / Fire Beast
Community roster entry. The reviewed sources do not establish a consistent behavior description or countermeasure.
Puffo / Puffa / Puff Ball
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Streamer
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Shroomer / Shroomed Player
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Worm / Snail Spawner-Worm
Clue: A community guide describes it attaching to one or two players. Threat: The linked players’ movement becomes connected, creating a coordination problem without direct damage according to that guide. Response: Communicate before moving so linked teammates do not pull against each other. The guide’s label is ambiguous, so the identity and exact behavior should be treated cautiously.
Robot Button
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Mime
Clue: Erratic, silent movement is reported. Threat: A community guide describes a grab or attack that may be lethal in one hit. Response: Treat an unexpected silent approach as urgent; keep distance and do not assume its lack of sound means it is harmless.
Cam Creep
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Harpooner
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
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Infiltrator
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Voidrone / Black Hole Bot
Community roster entry with two reported labels. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Wallo
Community roster entry. The reviewed sources do not establish a reliable cue or avoidance tactic for this entry.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the reported tactics have in common
- Read the cue, not just the name. Sound, a sensor light, line of sight, and movement patterns are the clearest reported ways to distinguish encounters.
- Account for indirect threats. A creature that carries someone away, slows them, links movement, or traps them can split a team or delay a return even if it does not immediately deal damage.
- Communicate when one player is affected. A capture, linked movement, or separation is easier to manage when teammates know who is affected and where they are.
- Do not rely on a universal danger ranking. The sources describe different situations and do not support a consistent numerical ranking of enemies.
GameSpot observed that rarer or more dangerous creatures seem to attract more views in recorded runs, but this is an apparent general pattern, not a guaranteed reward formula.
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How complete is the known roster?
Published lists are dated snapshots, not an official count. Hard Drive reported 23 creatures in an article dated May 2, 2024; a Steam Community guide by w0jt3k and M4TiY listed 27 entries when updated August 17, 2024. A different Steam guide updated June 15, 2024 includes additional entries, variants, and possibly inaccessible forms. These totals differ because the lists do not use the same scope, and they do not establish the current number of spawnable enemies.
Names also depend on the guide. Pro Game Guides writer Nenad Grujić said on June 5, 2024, “One more thing: monsters don’t have official names, so I used descriptive names of my own.” That explains the labels used in that guide; it is not a developer statement establishing a universal naming policy.
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