Mystery

- Still alive???
Incoming mysterious enemies! - ―Beginning of Wave 16 (Golden)

- Here come mystery zombies!
They'll turn into a random enemy when killed! I wonder what's inside them? - ―Commander dialogue on Wave 16 (Formerly, Legacy Molten)
Commander dialogue on Wave 11 (Formerly Normal)

- Here come mystery enemies!
They'll turn into a random enemy when killed! I wonder what's inside them? - ―Commander dialogue on Wave 16 (Legacy Fallen)

- He died miraculously!
When they die, they turn into zombies! what they have - ―Commander dialogue on Wave 16 (Translated Molten
Commander dialogue on Wave 11 (Formerly Translated Normal)
(Translated Molten)

- Here you can kill enemies.
When they die, they become enemies. friendly game - ―Commander dialogue on Wave 16 (Translated Fallen)
Commander dialogue on Wave 17 (Translated Hardcore)

- Hewe come mystewy zombies! (☉_☉)
They'ww tuwn into a diffewent zombie when kiwwed! I wondew what's inside them? - ―Commander dialogue on Wave 11 (April Fools 2022 Normal)

- Hewe come mystewy zombies! .⁰(☒д☒ₒ )⁰.
They'ww tuwn into a diffewent zombie when kiwwed! I wondew what's inside them? - ―Commander dialogue on Wave 16 (April Fools 2022 Molten)

- Hewe come mystewy enemies! ε=ε=(っ*´□`)っ
They'ww tuwn into a wandom enemy when kiwwed! I wondew what's inside them? - ―Commander dialogue on Wave 16 (April Fools 2022 Fallen)

- Hewe come mystewy enemies! ε=ε=(っ*´□`)っ
TThey'ww tuwn into a wandom enemy when kiwwed, I wondew what's inside them? - ―Commander dialogue on Wave 17 (April Fools 2022 Hardcore)

- Still alive???
Incoming mysterious enemies! - ―Beginning of Wave 11 (Pre-Overhaul, Beginner's)
Beginning of Wave 16 (Pre-Overhaul, Molten, Golden & Fallen)
Description
The Mystery is a fast enemy that spawns another enemy upon its death. The enemy spawned depends on mode and wave, making the Mystery a potentially very dangerous enemy, especially if the player is unlucky and comes unprepared.
This appears primarily appears in Hardcore and Voidcore modes, and in some Sandbox mode exclusive modes, these being Legacy Molten mode, Legacy Fallen mode and Golden mode. They also appeared in The Heights during the SFOTH Event and in Nil Zone II as part of the Halloween 2026 Live Events.
The Mystery can be spawned by the Void Reaper.
Logbook Description
"The Mystery is still a mystery. It seems they have not decided upon what they wanted to become and instead choose to wander the Void. They like to watch from a distance, studying everyone from a distance. It’s not sure what it wants to become but perhaps they are window-shopping for a new identity. They have been seen trying to lure others into the darkness and if that happens, only one of them returns."
Appearance
The Mystery is an entity made out of stone with a question mark on their torso. It has three walking animations it can choose from.
The legacy Mystery is a translucent glass green humanoid with a glowing orange question mark on its torso. It is faceless and small green question marks are emitted from its torso when it is killed.
The Enemies Beta version of the Mystery had a pastel light green skin color, with its torso and legs being a darker shade of green with a plaid stitch mark pattern on them. It also had a desaturated yellowish-orange question mark on its chest.
The third version of the legacy Mystery is similar to the current version, except it had a drooling zombie face and did not emit green question marks upon death.
The second version of the legacy Mystery is similar to the third version, except it was more translucent, and its skin color was a lighter shade of green. Its question mark did not glow either and had a vibrant orange color.
The first version of the legacy Mystery is similar to the second version, except it was blue.
Enemy Spawned
The Mystery summons in one enemy on death. These are:
The Mystery is able to spawn more enemies after its debut. Italic names can be spawned from the Mystery's debut.
Easy
- Only visible through Sandbox mode.
- Normal
- Speedy (from wave 4)
- Slow (from wave 6)
- Normal Boss (from wave 8)
- Hidden (from wave 10)
- Bolt (from wave 20)
Legacy Molten
- Normal
- Speedy (from wave 6)
- Slow (from wave 8)
- Normal Boss (from wave 11)
- Hidden (from wave 14)
- Molten (from wave 21)
- Shock (from wave 27)
Golden
- Abnormal
- Quick (from wave 6)
- Heavy (from wave 8)
- Abnormal Boss (from wave 11)
- Shadow (from wave 14)
- Golden (from wave 21)
- Charge (from wave 27)
Legacy Fallen
Strategy
- Towers with decent DPS like the Saboteur, Crook Boss, Engineer or Minigunner can be used to take it down.
- Due to it spawning in groups majority of the time, AOE towers like the Golden Demoman or Mortar can also be used to clear it out.
- The Mystery can spawn Balloons and Phantoms, meaning decent hidden and flying detection is required against them.
Gallery
Previous Variants
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Fourth version, second animation (8 May 2021 – 4 December 2021)
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Fourth version, first animation (26 May 2020 – 8 May 2021)
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Third version (13 October 2019 – 26 May 2020)
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Second version (15 July 2019 – 13 October 2019)
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First version (14 June 2019 – 15 July 2019)
Corpse Variants
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Second Corpse variant, current version (12 March 2025 – Present)
Promotional Images
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Mystery on a promotional image.
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Mystery on a promotional image.
Promotional Videos
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Mystery on a promotional video.
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Mystery on a promotional video.
Trailers
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Mystery in the game trailer.
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Mystery in the game trailer.
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Mystery in the game trailer.
Miscellaneous
Trivia
- Although the Mystery has been phased out and replaced in most modes by the breakers to prevent RNG, they were kept for the Hardcore and Voidcore modes.
- The appearance of the Mystery was originally based on the Mystery from Tower Battles.
- Prior to the Overhaul Update, in regular Fallen mode, the Mystery could spawn the Rusher, even though it is a Polluted Wasteland enemy and did not appear naturally in regular Fallen mode.
- The question mark on the Mystery is a re-textured version of the Question Mark accessory from the Roblox catalog.
- The modern Mystery is unaffected by enemy appearance modifiers, such as Talk Like a Pirate Day.
Update History
- 14 June 2019 - BETA v1.0.0
- Mystery added.
- 15 July 2019 - BETA v1.5.1
- Appearance changed.
- 19 July 2019 - BETA v1.6.0
- Animation changed.
- 2 August 2019 - BETA v1.7.0
- Normal Boss spawn chance massively decreased.
- 13 October 2019 - Release v1.0.0
- Health increased from 10 to 15.
- Appearance changed.
- First wave appearance changed from wave 13 to wave 16 in Easy and Normal modes (now Easy and Molten modes).
- Bug: Mystery upon death has a chance to not disappear, instead it will have negative health and continue walking, stopping when it reaches a turn or the exit. Increases base health if it reaches the exit.
- 26 May 2020 - Release v1.11.0
- Health now changes depending on the gamemode. Previously had 15 health in all modes it spawned in.
- 10 health in Beginner's mode.
- 25 health in Molten mode.
- 40 health in Golden mode.
- 60 health in Fallen mode.
- Now spawns in every gamemode.
- Appearance changed. Now emits particles from its torso when killed.
- Mystery now spawns new enemies depending on the wave. Replaces the Ultra Mystery. Prior to this, it only spawned the Normal, Speedy, Slow, Hidden or rarely the Normal Boss.
- Enemies inherited from the Ultra Mystery: Abnormal, Quick, Heavy (Radioactive in Polluted Wasteland), Ninja and Abnormal Boss (Wasted Boss in Polluted Wasteland).
- New enemies it spawns: Molten, Shock, Strong, Bolt, Golden, Charge, Fallen, Glitch, Error (Circuit in Polluted Wasteland) and Rusher.
- First wave appearance changed from wave 16 to wave 11 in Beginners mode (now Easy mode).
- Bugfix: Mystery can no longer increase base health if it has negative health and reaches the exit, but the bug happens much more frequently.
- Health now changes depending on the gamemode. Previously had 15 health in all modes it spawned in.
- 31 May 2020 - Release v1.11.1
- Bugfix: Negative health bug made less severe.
- 29 October 2020 - Overhaul v1.0.0
- No longer appears in the Golden mode as it has been removed.
- Health decreased.
- Summoned enemies no longer give money when damaged.
- Now becomes immune to all forms of damage when summoned by the Necromancer Boss.
- Enemies it spawns changed.
- Bugfix: Negative health bug fixed.
- 8 May 2021 - Overhaul v1.3.0
- Animation changed.
- 4 December 2021 - v1.0.0
- Animation changed.
- 12 March 2022 - v1.1.0
- Bug: Mystery has 10 health on all gamemodes.
- 15 March 2022 - v1.1.0c
- Bugfix: Mystery now has correct health values on all gamemodes.
- 29 July 2022 - v1.3.0
- Now appears in Polluted Wasteland II.
- Now has a new appearance with the Enemies Beta modifier active.
- Enemies it spawns changed.
- New enemies it spawns:
- 31 October 2022 - v1.4.2
- No longer appears in Polluted Wasteland II, as it has been replaced by the Breaker2.
- 24 February 2024 - v1.14.0
- No longer naturally appears in Easy mode.
- 23 May 2024 - v1.23.0
- Bug: Mystery cannot be targeted or collided with.
- 23 May 2024 - v1.23.1
- Bugfix: Mystery is no longer impossible to target or collide with.
- 2 August 2024 - v1.27.0
- 11 December 2024 - v1.45.0
- 16 December 2024 - v1.46.0
- Now appears in Polluted Wasteland II, replacing the Breaker2.
- 17 December 2024 - v1.46.4
- Mystery now appears in Golden mode, Legacy Fallen mode and Legacy Molten mode, if activated through Sandbox mode.
- 17 December 2024 - v1.46.5
- Mystery no longer appears in Golden mode, Legacy Fallen mode and Legacy Molten mode, as they have been removed.
- 12 February 2025 - v1.53.0
- Mystery now appears in Golden mode, Legacy Fallen mode and Legacy Fallen mode, if activated through Sandbox mode.
- 19 February 2025 - v1.54.0
- No longer appears in Polluted Wastelands II, as it has been replaced by the Breaker2.
- 30 April 2025 - v1.63.0
- Bug: Mystery no longer uses the death sound effect.
- 24 September 2025 - v1.75.0
- No longer appears in public rotation of Challenge Maps, as they exclusively appear within Sandbox mode.
- 5 June 2026 - v2.0.0
- 25 September 2026 - v2.11.2
- Mystery now appears in Nil Zone II as part of the Halloween 2026 Live Events.
- Has 50 health.
- Mystery now appears in Nil Zone II as part of the Halloween 2026 Live Events.
- 28 September 2026 - v2.12.1a
- Mystery no longer spawns in Nil Zone II, as the Halloween 2026 Live Event has ended.
- 2 October 2026 - v2.13.0
- Mystery now appears in Nil Zone II as part of the Halloween 2026 Live Events.
- 5 October 2026 - v2.13.0a
- Mystery no longer spawns in Nil Zone II, as the Halloween 2026 Live Event has ended.
| Previous Debut | Current Debut | Next Debut |
|---|---|---|
| Hidden Wave 13 |
Mystery Wave 16 |
Necromancer Wave 20 |
| Previous Debut | Current Debut | Next Debut |
|---|---|---|
| Shadow Wave 13 |
Mystery Wave 16 |
Golden Wave 20 |
| Previous Debut | Current Debut | Next Debut |
|---|---|---|
| Shadow Wave 13 |
Mystery Wave 16 |
Dark Necromancer Wave 19 |
| Hardcore | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Elite Lead Wave 16 |
Mystery Wave 17 |
Blighted Wave 19 |
| Voidcore | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Elite Lead Wave 15 |
Mystery Wave 16 |
Blighted Wave 18 |
| The Heights (SFOTH Event) (24 June 2019 – 13 October 2019) | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Crystalite Wave 8 |
Mystery Wave 9 |
Brute Wave 10 |
| Previous Debut | Current Debut | Next Debut |
|---|---|---|
| Hidden Wave 10 |
Mystery Wave 13 |
Necromancer Wave 14 |