Slow King

Sandbox Only Content

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Slow King (Legacy) was previously removed on the 5th of 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.

Slow King

Legacy • Modern

Similar Article

This article is about Slow King (Legacy). You may be looking for Slow, Slow Boss, Mega Slow, or other uses of King.

Slow King
Forcefield Normal
Mode Appearance	Sandbox Originally: Hardcore
Wave Debut	41
Statistics
Base Health	5,000
Base Shield	3,000
Defense	80% (With Forcefield) 10% (Without Forcefield)
Speed	Below Average (2.5)
Spawned By	Void Reaver Mystery Boss (Hardcore, wave 42 onwards)
Hidden?	No
Flying?	No
Ghost?	No
Lead?	No
Attributes	Stun Immune

Wave 40. Thats^[sic] it right?
...
There's... more???

―Commander dialogue on Wave 41 (Hardcore)

Wave 40. Thats^[sic] it wight?
... ☒☒⌐■-■☒☒
Thewe's... mowe???

―Commander dialogue on Wave 41 (April Fools 2022 Hardcore)

Description

The Slow King was a slightly slow and tanky enemy that appeared in Hardcore mode. Currently, it can only be spawned in Sandbox mode if the player has the Sandbox Plus+ gamepass. It is similar to the Mega Slow, but has more health and faster speed. The Slow King also has Shield Health, and this is attached to its forcefield that it spawns with. With this forcefield, the Slow King has a high defense value. Without its shield, it will be reduced to 10%, regardless of what defense it spawned with. If it loses defense, the defense it changes to will include the defense reduction. For example, if its defense got reduced from 80% to 75%, it will have 5% defense after losing all of its Shield Health. The Slow King also has Stun Immunity, meaning that the Warden and Electroshocker can only slow it down, while knockback towers cannot knock it back.

The Slow King can be spawned by the Void Reaver. The Mystery Boss can spawn the Slow King upon its death in Hardcore mode, wave 41 onwards.

Appearance

CurrentOriginal

The current Slow King is similar to the previous version, except it has a huge slash across its face.

When the Slow King spawns, it has a translucent pink forcefield surrounding it. This forcefield disappears when the Slow King loses its shield health.

The original Slow King had green reflective skin. It had tumors on both arms. Its torso and legs were black granite, and it wore diamond-plated armbands. Its cape was black granite and had brown hooks on its shoulders. It wore a slightly tilted dark green granite crown, which indicates that this enemy was royalty. It emitted green particles from its torso and purple particles from its arms. On its torso, was a pink gem. It was faceless and had a twisted left leg.

When the Slow King spawns, it has a translucent pink forcefield surrounding it. This forcefield disappears when the Slow King loses its shield health.

Strategy

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

• The forcefield around the Slow King can be problematic if not taken care of. This is because it gives the Slow King a very high defense value.
  • The Pursuit can be useful here because of its high DPS and its missiles dealing full damage to defense enemies.
  • While being relatively slow, it allows other enemies, like the Lava and Fallen Titan, to go much further along the path.
  • Defense dropping towers like the Freezer, Pyromancer or Jester can be used to drop its defense, allowing your towers to deal more damage to it.
• The Electroshocker, Warden or Sledger can be used to slow this down.
  • Do note that due to its large size, freezing towers and the Warden will slow it down for a shorter amount of time.
  • The Slow King also has Stun Immunity, which means that stunning towers like the Warden can only slow it down instead of stopping it completely while knockback towers like the Brawler cannot knock it back.
• After the Slow King's forcefield disappears, other towers with high DPS, like the Minigunner, Turret, Accelerator and Ranger, can be used to defeat the Slow King.

Gallery

Previous Variants

• 
  Second version with forcefield (8 May 2021) – 31 October 2025)
• 
  First version without forcefield (29 October 2020 – 8 May 2021)
• 
  First version with forcefield (29 October 2020 – 8 May 2021)

Corpse Variants

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

Icons

• 
  Slow King on the game icon.

Promotional Videos

• 
  Slow King on a promotional video.

Renders

• 
  Slow King on a render.

Badges

• 
  Slow King on the Triumph Hardcore badge.

Miscellaneous

• 
  Slow King on its Index icon.

Trivia

• The Slow King's cape is a re-textured version of the Atomic Prussian Cloak accessory from the Roblox catalog.
• This may be considered the Hardcore version of the Slow Boss.
• Oddly, the Slow King's forcefield is orange in the Index instead of purple.

Update History

• 29 October 2020 - Overhaul v1.0.0
  • Slow King added.
• 8 May 2021 - Overhaul v1.3.0
  • Appearance changed.
  • Bug: If the defense of the Slow King is decreased, there is a chance that its defense will not decrease to 10% after losing its shield health.
• 12 March 2022 - v1.0.0
  • Bugfix: Defense now properly decreases when reduced.
• 23 May 2023 - v1.7.3a
  • Energy Immunity replaced with Stun Immunity.
• 31 October 2025 - v1.79.0
  • Bug: Slow King's forcefield is now orange.
• 5 June 2026 - v2.0.0
  • Slow King removed from the main game, now appears exclusively in Sandbox mode.
  • No longer appears in the Index.

Hardcore
Previous Debut	Current Debut	Next Debut
Lead Balloon Wave 39	Slow King Wave 41	Error Wave 42