- "A fast boss that's ALSO hidden?
You GOTTA be kidding me!
Please tell me you've got units to detect it by now.." - ―Commander dialogue on Wave 24 (Legacy Molten)
Commander dialogue on Wave 17 (Formerly, Easy)
- "Is this a beginner?
I was lying!
If you have any questions, don't hesitate to contact us." - ―Commander dialogue on Wave 17 (Translated Easy)
Commander dialogue on Wave 24 (Translated Molten)
- "A fast boss that's AWSO hidden?
You GOTTA be kidding me! (☉_☉)
Pwease teww me you've got units to detect it by now.. (ΦωΦ)" - ―Commander dialogue on Wave 17 (April Fools 2022 Normal)
- "A fast boss that's AWSO hidden?
You GOTTA be kidding me! (๑•̀ㅂ•́)૭☒
Pwease teww me you've got units to detect it by now.. | ´ω`|Φ" - ―Commander dialogue on Wave 24 (April Fools 2022 Molten)
- "Prepare for another boss!
(Hint: even more camo defense.)" - ―Beginning of Wave 17 (Pre-Overhaul, Beginner's)
Beginning of Wave 24 (Pre-Overhaul, Molten)
- "Get ready for a boss! Hint: Get camo defense."
- ―Beginning of Wave 22 (Pre-MEGA)
Description
The Hidden Boss is a large and fast boss that appears in Easy, Casual, Legacy Molten, Intermediate, Molten, Base Arena PVP and Molten Arena PVP modes. It also appeared in The Classic Event. It has decent amount of health and decent speed. Towers must have hidden detection to target the Hidden Boss.
The Hidden Boss can be spawned from the Mystery Boss upon its death in the Easy and Legacy Molten modes.
Appearance
The current version of the Hidden Boss is a large humanoid with a waist, lower arms and lower legs in its rig. It is faceless and has a translucent dark grey body with a slime-like texture. It wears a black blindfold and cloak with a cape and sleeves, as well as black spiked braces with chains attached. It emits black smoke from its body.
The first version of the Hidden Boss was a large humanoid with a waist in its rig. It had a translucent black body and wears a black cape, cloak and sleeves along with a grey blindfold.
The current version of the legacy Hidden Boss has a translucent black skin and a black pebble torso and legs. It wears a black cape and a large pair of translucent black horns with a shorter pair behind them. It has an emissive white scar on its face with two streaks leaking on the right side of it.
The current Enemies Beta version of the legacy Hidden Boss is a large humanoid with a waist in its rig. It has a translucent black body and wears a black cape, cloak and sleeves along with a grey blindfold.
The third version of the legacy Hidden Boss had translucent black skin and a black pebble torso and legs. It wore a black cape and had a large pair of translucent black horns with a shorter pair behind them. It had a drooling zombie face with glowing white eyes.
The second version of the legacy Hidden Boss had translucent grey skin and a dark navy granite torso and legs. It wore a black cape and had a large pair of translucent black horns with a shorter pair behind them. It had a drooling zombie face with glowing white eyes. Grey smoke also came out of its torso.
The first version of the legacy Hidden Boss had translucent grey skin and a translucent dark grey torso and legs. It had a large pair of translucent black horns with a shorter pair behind them. It had a drooling zombie face with glowing white eyes. White particles also came out of its torso. Its walking animation had it hovering above the path.
Strategy
- Towers with decent DPS and hidden detection, like the Minigunner, Accelerator and bottom path Pursuit can be used to deal with it.
- Early-game towers like the Crook Boss, Soldier, Militant or Assassin can also be used.
- Towers like the Medic, Ace Pilot or Firework Technician can be used to grant hidden detection to towers that do not normally have it, like the Ranger, Mortar or Toxic Gunner.
- While some splash damage towers like the Demoman and Mortar cannot target Hidden Bosses, they can hit them through splash damage, if another detectable enemy is near the Hidden Boss.
- You can use the Frost Blaster, Freezer and Warden to slow the Hidden Boss down.
- While Sledger and Electroshocker do not have hidden detection, they can still indirectly hit the Hidden Boss if a detectable enemy is near it, though this should not be relied on as its quite inconsistent.
- Due to the Hidden Boss's size, various forms of stalling like freeze or knockback will be less effective on it.
Gallery
Previous Variants (Modern)
Previous Variants (Legacy)
Animations (Modern)
Animations (Legacy)
Converted Variants (Modern)
Corpse Variants (Modern)
Corpse Variants (Legacy)
Icons
Promotional Videos
Trailers
Miscellaneous
Trivia
- When the Uber Mystery was in the game, it had a chance of spawning the Hidden Boss, upon its death, in Golden and Fallen modes.
- The current appearance of the Hidden Boss is very similar to the original version of the Shadow Boss.
- On some devices, the Hidden Boss may have transparent skin instead of black skin, with certain graphics settings.
- The cape used by the legacy Hidden Boss is a re-textured version of the Guardian of the Night Cape accessory from the Roblox catalog.
- Multiple Hidden Bosses can be seen as a chess piece in the Chess Board map, representing the Bishop chess piece.
- One of the Hidden Bosses can also be seen hanging on the chess piece.
Update History
- 14 June 2019 - BETA v1.0.0
- Hidden Boss added.
- 13 October 2019 - Release v1.0.0
- 26 May 2020 - Release v1.11.0
- First wave appearance changed from wave 24 to wave 17 in Beginners mode.
- 29 October 2020 - Overhaul v1.0.0
- Health decreased from 600 to 450.
- Appearance changed.
- 8 May 2021 - Overhaul v1.3.0
- Appearance changed.
- 31 October 2022 - v1.4.2
- Now has a new appearance with the Enemies Beta modifier active.
- 24 February 2024 - v1.14.0
- Modern variant added.
- Now uses Enemies Beta appearance in Easy mode.
- Speed increased from Above Average (4) to Slightly Fast (5) in Easy mode.
- Now gives
$400 upon death in Easy mode.
- 3 May 2024 - v1.20.0
- Cash given upon death increased from $400 to $600 in Easy mode.
- Now appears in Intermediate mode.
- Has 600 health in Intermediate mode.
- Gives $600 upon death in Intermediate mode.
- Cash given upon death increased from
- 18 May 2024 - v1.22.0
- 23 May 2024 - v1.23.0
- Appearance and animation changed in Molten mode.
- Speed increased from Above Average (4) to Slightly Fast (5) in Molten mode.
- Now appears in Classic Forest Camp and Classic Castle.
- Has 450 health in Classic Forest Camp and Classic Castle.
- 28 May 2024 - v1.23.3
- No longer appears in Classic Forest Camp and Classic Castle, as they have been removed.
- 29 May 2024 - v1.23.4
- Send cooldown increased from 1 to 3.
- Economy boost decreased from $24 to $0.
- 21 June 2024 - v1.25.0
- Send cost increased from $400 to $480.
- Send cooldown increased from 3 to 4.
- Send cost increased from
- 19 July 2024 - v1.26.0
- Send cooldown removed.
- 25 September 2024 - v1.33.0
- 6 November 2024 - v1.40.0
- Hidden Boss can no longer have its defense dropped while a Boss enemy.
- 11 December 2024 - v1.45.0
- Now appears in Casual mode.
- Has 700 health in Casual mode.
- Health increased from 600 to 700 in Intermediate mode.
- Health increased from 450 to 700 in Molten mode.
- Now appears in Casual mode.
- 17 December 2024 - v1.46.4
- Hidden Boss now appears in Legacy Molten mode, if activated through Sandbox mode.
- 17 December 2024 - v1.46.5
- Hidden Boss no longer appears in Legacy Molten mode, as it has been removed.
- 12 February 2025 - v1.53.0
- Legacy version now uses the correct statistics in Sandbox mode.
- 12 February 2025 - v1.53.3a
- Hidden Boss now appears in Legacy Molten mode, if activated through Sandbox mode.
- 9 April 2025 - v1.60.0
- Now appears in Low Rank and Mid Rank PVP Test.
- Has 600 health in Mid Rank.
- Has a spawn timer of 3 in Low Rank.
- Send number increased from 1 to 1-2.
- Now changes the health of the Hidden Boss to 600 when sent.
- Now appears in Low Rank and Mid Rank PVP Test.
- 23 April 2025 - v1.62.0
- No longer appears in the PVP Test as it has been removed.
- 30 April 2025 - v1.63.0
- Bug: Legacy Hidden Boss no longer uses the death sound effect.
- 23 July 2025 - v1.71.0
- 1 October 2025 - v1.76.0
- Cash given is now mode dependent.
- Most modes give $600 on death.
- Default value is $5 on death.
- Most modes give
- Cash given is now mode dependent.
- 4 October 2025 - v1.76.2b
- Hidden Boss now appears in Nil Zone as part of the Halloween 2025 Live Events.
- Has 3,500 health.
- Gives $2,000 on death.
- Hidden Boss now appears in Nil Zone as part of the Halloween 2025 Live Events.
- 4 October 2025 - v1.76.2d
- Hidden Boss no longer spawns in Nil Zone, as the Halloween 2025 Live Event has ended.
- 11 October 2025 - v1.76.4a
- Hidden Boss now appears in Nil Zone as part of the Halloween 2025 Live Events.
- Health decreased from 3,500 to 3,000 in Nil Zone.
- 12 October 2025 - v1.76.4b
- Hidden Boss no longer spawns in Nil Zone, as the Halloween 2025 Live Event has ended.
Notes
 Easy
| ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Slow Boss Wave 16 |
Hidden Boss Wave 17 |
Bolt Wave 19 |
| Casual | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Slow Boss Wave 16 |
Hidden Boss & Hazmat Wave 17 |
Speedy Boss Wave 18 |
 Legacy Molten
| ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Slow Boss Wave 22 |
Hidden Boss Wave 24 |
Shock Wave 26 |
| Intermediate | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Speedy Boss Wave 18 |
Hidden Boss & Failed Experiment Wave 20 |
Breaker4 Wave 25 |
| Molten
| ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Hazmat Wave 17 |
Hidden Boss Wave 18 |
Molten Necromancer Wave 20 |
| Basic Arena PVP | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Slow Boss Wave 16 |
Hidden Boss Wave 17 |
Enraged Wave 19 |
| Molten Arena PVP | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Hazmat Wave 17 |
Hidden Boss & Molten Mech Wave 20 |
Breaker4 Wave 24 |
| Classic Forest Camp (The Classic Event, Mission 3) (23 May 2024 – 28 May 2024) | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Breaker2 Wave 5 |
Hidden Boss & Necromancer Wave 7 |
Breaker4 Wave 8 |
| Classic Castle (The Classic Event, Mission 5) (23 May 2024 – 28 May 2024) | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Korblox Soul & Korblox Warrior Wave 5 |
Hidden Boss Wave 6 |
Hidden Wave 7 |
  Pre-MEGA (Easy, Normal, Hard & Insane)  
| ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Strong Wave 21 |
Hidden Boss Wave 22 |
Lightning Wave 26 |
| Nil Zone (Halloween 2025 Live Events) (11 October 2025 – 12 October 2025) | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Breaker3 & Corrupted Horror Wave 9 |
Hidden Boss Wave 10 |
Eclipsed Wave 11 |
 |
|---|
| Sandbox Only Enemies | ||
|---|---|---|
| Legacy Molten Mode | Normal • Speedy • Slow • Normal Boss • Hidden • Mystery • Necromancer • Molten • Slow Boss • Hidden Boss • Shock • Speedy Boss • Mystery Boss • Mystery Summoner • Molten Titan • Molten Boss | |
| Golden Mode | Abnormal • Quick • Heavy • Abnormal Boss • Shadow • Mystery • Dark Necromancer • Golden • Chained Boss • Shadow Boss • Charge • Tank • Mystery Boss • Boomer • Summoner Boss • 24 Karat • Gold Guard • Gold Titan | |
| Legacy Fallen Mode | Abnormal • Quick • Heavy • Abnormal Boss • Shadow • Mystery • Dark Necromancer • Fallen • Giant Boss • Shadow Boss • Glitch • Hazard • Tank • Mystery Boss • Boomer • Templar • Summoner Boss • Error • Fallen Hero • Fallen Guardian • Fallen King | |
| Brain Rot | Toilet • Streamer • Chad • Metal Toilet • Ninja Toilet • Png Bot2 • Png Bot • Brick Man • Armored Toilet • Megatron Toilet • Pro Streamer • Arrow • Png Bot4 • Png Bot3 • Toilet Boss | |
| Other | Slime • Elite Boomer • Dummy Boss • Imposter | |
| Legacy Enemies | ||
|---|---|---|
| Replaced | Blighted • Boomer 1 • Necromancer 2 • Mystery 2 • Gravekeeper • Super Mystery • Ultra Mystery • Uber Mystery • Ninja • Frost Hero • Strong | |
| Pre-MEGA | Carrier • Swarm • Tank 2 • Boomer 2 • Controlled • Shrike Crystal • Rusted • Witch Doctor • Tombstone • Frozen • Deep Freeze • Frost Hero | |
| Polluted Wasteland | Radioactive • Wasted Boss • Amalgamation • Rusher • Splitter • Split • Nuclear Fallen King | |
| Hidden Wave (Legacy) | Glitched Giant • Bug • Bruh • SCT • Jaxe • Mechanical Rot • Frost Hero • Developer 1 • Developer 2 • Developer 3 • Creator • A • B • C | |
| Other | Void • First Form | |