Mystery

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This article is about Mystery. You may be looking for other Mystery enemies.

Mystery
Mode Appearance	Normal Molten Fallen Hardcore Nuclear
Wave Debut	11 (Normal) 16 (Molten, Fallen & Nuclear) 17 (Hardcore) 9 (The Heights)
Statistics
Base HP	10 (Normal & Molten) 20 (Fallen, Hardcore & Nuclear)
Speed	Above Average
Spawned By	Mystery Summoner Grave Digger Summoner Boss Necromancer Boss Void Reaver
Hidden?	No
Fly?	No
Ghost?	No
Lead?	No
Immunities	None
Abilities
Ability 1	Spawn - Upon death, spawns into a random enemy depending on the mode and wave.
Versus
Versus Send Cost	$150
Versus Wave Unlock	14

• Current
• April Fools 2022
• Version 1

"Here come mystery zombies!
They'll turn into a random enemy when killed! I wonder what's inside them?"

―Commander dialogue on Wave 11 (Normal)
Commander dialogue on Wave 16 (Molten)

"Here come mystery enemies!
They'll turn into a random enemy when killed! I wonder what's inside them?"

―Commander dialogue on Wave 16 (Fallen & Nuclear)

"Here come mystery enemies!
They'll turn into a random enemy when killed, I wonder what's inside them?"

―Commander dialogue on Wave 17 (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, Beginners)
Beginning of Wave 16 (Pre-Overhaul, Molten, Golden & Fallen)

Description

The Mystery is a somewhat fast, yet weak, enemy that spawns another enemy upon its death. The enemy spawned depends on the mode and wave. This can make Mystery an incredibly dangerous enemy, especially if you only have weak defense.

This appears in every single mode, but has variable health depending on the difficulty you are playing on. They also appeared in The Heights during the SFOTH Event.

The Mystery can be spawned by the Mystery Summoner, Summoner Boss, Necromancer Boss, Void Reaver and Grave Digger.

Appearance

• Current
• Current (Enemies Beta)
• Version 3
• Version 2
• Version 1

The current version of the Mystery is similar to the third version, except it is faceless and green question marks are emitted from its torso when it is killed.

The current Enemies Beta modifier version of the Mystery has green skin, with its torso and legs being a slightly darker shade of green. It also has a yellow question mark on its chest.

The third version of the Mystery was green and translucent, with a glowing orange question mark on its torso. The Mystery had a drooling zombie face.

The second version of the Mystery was green and translucent, with an orange question mark on its torso. The Mystery had a drooling zombie face.

The first version of the Mystery was blue and translucent, with an orange question mark on its torso. The Mystery had a drooling zombie face.

Enemy Spawned

The Mystery is able to spawn more enemies after its debut. Italic names can be spawned from the Mystery's debut.

Normal Normal Speedy Slow Normal Boss Hidden Strong (from wave 15) Bolt (from wave 20) Molten Normal Speedy Slow Normal Boss Hidden Molten (from wave 21) Shock (from wave 27) Fallen Abnormal Quick Heavy Abnormal Boss Shadow Fallen (from wave 21) Glitch (from wave 27) Hazard (from wave 29) Error (from wave 37) Hardcore Abnormal Quick Hefty Invisible Balloon Lead Lead Boss Lava (from wave 38) Lead Balloon (from wave 40) Error (from wave 43) Circuit (from wave 44) Soul (from wave 46) Nuclear Mutated Mutated Speedy Hazmat Mutated Boss Shadow Toxic (from wave 21) Circuit (from wave 27) Rusher (from wave 29)

Strategy

• Be prepared to deal with the zombies that spawn from the Mystery, especially hidden enemies, like Hiddens, if your hidden defense is not up to scratch.
  • High health enemies, like the Normal Boss and Abnormal Boss, can also pose a threat, though you should have sufficient towers to deal with a few of them.
• Splash damage towers, like the Demoman and the Rocketeer, can help to defeat the hordes of Mysteries that come.
• The Tank or Railgun Tank from the Military Base can defeat hordes of Mysteries and their spawned enemies because of their high health and high splash damage.
• The Freezer, Frost Blaster, Sledger, Toxic Gunner and Electroshocker can slow down hordes of Mysteries.
  • These towers can be especially useful in Hardcore mode as the Mystery may spawn a Circuit from wave 44 onwards. This enemy will cause all other enemies nearby to walk faster, possibly leading to a defeat if you get unlucky.
• If there are some Mysteries at the end of the map, do not kill them as they may turn into high health enemies, like Normal Bosses, severely reducing your base health.
• The Gladiator can hit the Mystery and the enemy that they spawn if you are lucky enough.
• The enemies that spawn from the Mystery do not need to be killed for wave progression to occur.
  • If you are speedrunning a map, you should focus on killing the Mysteries first by setting your towers' targetting to Weakest before moving onto the enemies that spawn.
    • Be aware that if you get a lot of high health enemies, like the Normal Boss, they may outrun your towers if you do not have enough DPS.
• In Hardcore mode, the Mystery may spawn enemies in large numbers that you may not be prepared for.
  • After wave 40, it can spawn Lead Balloons which can only be damaged by very few towers, like a Level 3+ Ranger.
  • After wave 46, it can spawn Souls which cannot collide with units. If you are not careful enough with your hidden defense, it may sneak past.
• Be aware that you do not earn any cash from damaging enemies that the Mystery spawns in every mode, except Hardcore mode.
• A Level 4 Pyromancer can easily kill hordes of Mysteries, alongside killing weaker enemies like Abnormal or Slow.
  • It can also reduce the defense from enemies like Hefty or Abnormal Boss.
  • Later on during the game, a Level 5 Pyromancer can do this more effectively, being able to kill the Mysteries and most enemies that spawn from it.
  • However, a Level 4 Golden Pyromancer can easily kill the Mysteries along with most of the enemies it spawns.

Trivia

• The appearance of the Mystery was originally based on the Mystery from Tower Battles.
• When the Super Mystery, Ultra Mystery and Uber Mystery were in the game, the Mystery was the only mystery enemy not to have glowing eyes.
• The Mystery, alongside the Mystery Boss, are currently the only enemies to spawn in every mode.
  • However, the Mystery appeared in the SFOTH Event, making it have the most gamemode appearances in the game.
  • They are also the only enemies that change their statistics depending on wave or mode, not including MEGA Scaling or Eggy Island enemies.
    • However, some major bosses can have different enemies that they can summon depending on the mode.
• 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 Mystery and Mystery Boss can learn to spawn new enemies even before its first wave appearance.
• The question mark on the Mystery is a re-textured version of the Question Mark accessory from the Roblox catalog.
• Prior to the Entity System Update, Mysteries summoned from the Summoner Boss could be stuck in the air.

Update History

14 June 2019 Mystery added. 15 July 2019 Appearance changed. 2 August 2019 Normal Boss spawn chance massively decreased. 13 October 2019 Health increased from 10 to 15. Appearance changed. First wave appearance changed from wave 13 to wave 16 in Easy and Normal modes (now Normal 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 Health now changes depending on the difficulty. Previously had 15 health in all modes it spawned in. 10 health in Beginners mode. 25 health in Molten mode. 40 health in Golden mode. 60 health in Fallen mode. Now spawns on every difficulty. 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 Normal 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. 31 May 2020 Bugfix: Negative health bug made less severe. 29 October 2020 No longer appears in the Golden mode as it has been removed. Health decreased. Health decreased from 25 to 10 in Molten mode. Health decreased from 60 to 20 in Fallen mode. 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. New enemies it spawns: Fallen mode: Shadow Hardcore mode: Hefty, Invisible, Balloon, Lead, Lead Boss, Lava, Lead Balloon, Error, Circuit and Soul. Enemies it no longer spawns: Fallen mode: Ninja Regular Fallen mode: Rusher Bugfix: Negative health bug fixed. 8 May 2021 Animation changed. 4 December 2021 Animation changed. 12 March 2022 Bug: Mystery has 10 health on all gamemodes. 15 March 2022 Bugfix: Mystery now has correct health values on all gamemodes. 29 July 2022 Enemies it spawns changed. New enemies it spawns: Polluted Wasteland II: Mutated, Mutated Speedy, Hazmat, Mutated Boss, Toxic, Circuit and Rusher.

Normal
Previous Debut	Current Debut	Next Debut
Hidden Wave 9	Mystery Wave 11	Necromancer Wave 13

Molten
Previous Debut	Current Debut	Next Debut
Hidden Wave 13	Mystery Wave 16	Necromancer Wave 19

Golden (Removed)
Previous Debut	Current Debut	Next Debut
Ninja Wave 13	Mystery Wave 16	Dark Necromancer Wave 19

Fallen
Previous Debut	Current Debut	Next Debut
Shadow Wave 13	Mystery Wave 16	Dark Necromancer Wave 19

Hardcore
Previous Debut	Current Debut	Next Debut
Lead Boss Wave 16	Mystery Wave 17	Mega Slow Wave 19

Nuclear (Polluted Wasteland II)
Previous Debut	Current Debut	Next Debut
Shadow Wave 13	Mystery Wave 16	Necromancer Wave 19

The Heights (SFOTH Event)
Previous Debut	Current Debut	Next Debut
Crystalite Wave 8	Mystery Wave 9	Brute Wave 10

Pre-MEGA (Easy, Normal, Hard & Insane)
Previous Debut	Current Debut	Next Debut
Hidden Wave 10	Mystery Wave 13	Necromancer Wave 14