Unknown

Sandbox Only Content

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Unknown was previously removed on the 5th June 2026, though it has been made available through the Sandbox mode later.
It is not accessible anywhere else in the game. This page will attempt to include information about both the version before removal and its re-added version.

Similar Article

This article is about Unknown. You may be looking for other uses of Unknown.

Unknown
Mode Appearance	Sandbox Originally: Hardcore
Wave Debut	49 (Hardcore)
Statistics
Base Health	14,000
Speed	Slightly Slow (2)
Spawned By	Void Reaver
Hidden?	No
Flying?	No
Ghost?	No
Lead?	No
Attributes	None
Ability
Ability	Stomp - The Unknown stomps, creating a shockwave that stuns towers and damages units by 1,000 damage.

Description

The Unknown was a high health enemy that appears in Hardcore mode. Currently, it can only be spawned in Sandbox mode if the player has the Sandbox Plus+ gamepass. It has slightly slow speed while also having high health. The Unknown has a Stomp ability that creates a shockwave which stuns towers. It also deals 1,000 damage to all units in the shockwave radius, which is enough to destroy the majority of them, with the exception of the Railgun Tank, Riot Guard and the Executioner Skeleton.

The Unknown can be spawned by the Void Reaver.

Appearance

The Unknown is a large humanoid entity, taller than the Giant Boss. It is faceless and has a grey reflective body with small humanoids coming out of it. Its left leg is twisted, and its head is slightly tilted downwards.

Strategy

This strategy refers to the state of the game while the Unknown still appeared in Hardcore mode.

• Unknowns will usually spawn in small groups. If the Unknown is not eliminated within a short period of time, the ability may stun many towers.
  • Because its Stomp is smaller than major bosses' Stomps, it is recommended to kill the Unknown from a distance.
  • The Ranger is a good long range cliff tower that can target this enemy at a distance, making it useful against this enemy.
    • The Brawler is also useful due to its high DPS and the ability to knockback the enemy.
    • They are also immune to stuns, making them even more useful.
  • High DPS towers, such as the Turret, Accelerator and Golden Minigunner are required to defeat this enemy due to its high health, however they can be stunned by its ability.
    • You can use the Medic to shield towers from the stun that the Unknown can cause.

Gallery

Corpse Variants

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  Second Corpse variant, current version (12 March 2025 – Present)

Promotional Videos

• 
  Unknown on a promotional video.

Trailers

• 
  Unknown in the game trailer.

Miscellaneous

• 
  Unknown on its Index icon.

Trivia

• This is the first and only enemy to have a Stomp attack that is not a major boss.
• The appearance of the Unknown is somewhat similar to the Void from Tower Battles, with the humanoids coming out of its body in the same pattern.
  • Additionally, both of them have a Stomp ability.
• During Hardcore Testing BETA, the Unknown had 8,000 health.
• The death sound of the Unknown is a pitched down version of the Shadow Boss's death sound.
• Weirdly, the health of the Unknown was increased in MEGA Servers, despite it not being able to spawn in a MEGA Server without admin commands.

Update History

• 29 October 2020 - Overhaul v1.0.0
  • Unknown added.
• 5 June 2026 - v2.0.0
  • Unknown removed from the main game, as it has been replaced by Heavy Voidling. Now appears exclusively in Sandbox mode.
  • No longer appears in the Index.

Hardcore
Previous Debut	Current Debut	Next Debut
Fallen Guardian & Fallen King Wave 48	Unknown & Vindicator Wave 49	Void Reaver Wave 50