Null Engineer

ARTICLE

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Sandbox Only Content

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Null Engineer was previously removed from the game on the 26th of November 2025 as it was part of the Null & Void Event, though it has been made available through the Sandbox mode.
It is not accessible anywhere else in the game, aside from in Sandbox Mode. This page will attempt to include information about both the version before removal and its re-added version.

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This article is about Null Engineer. You may be looking for Engineer or other uses of Null.

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 <title source="title1"><default>Null Engineer</default></title>

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Description

The Null Engineer, internally referred to as the Corrupted Engineer, was a tanky enemy that appeared in the Null & Void Event. It was the first Boss enemy the player encounters. It had a high amount of health and a decent amount of Defense, though it walks rather slowly. It has two abilities, both of which used to weaken towers and units.

The first ability is Attack, where the Null Engineer targets either a tower, which results in it getting stunned for 1 seconds, or a random unit, which leads to it receiving 3,000 damage. The other ability is Spawn Turret, where it creates a Null Sentry on the path. This Null Sentry will debuff a random. Both abilities have a range of 20, meaning they will not be used if there is no tower in range.

Logbook Description

"When the Null Engineer emerged from the tear it caught Engineer's attention. She watched as the creature placed down a turret identical to her own. Engineer's jaw tightened as she pulled down her goggles. "Cheap knockoff," she muttered, goggles guiding her own turret as it whirred to life."

Appearance

The Null Engineer is a corrupted recreation of the Engineer. It has red skin and grey hair. Its left arm has been replaced with a prosthetic arm. It wears a black shirt, maroon overalls with yellow buttons, grey bandages, black shoes and a black glove. On its head, it wears a red hard hat with goggles on top. On its back, it has a small radio.

With its right arm, it wields a Attack which it uses to stun towers and damage units, while in its left, it holds a wrench used to make Null Sentries.

Event Strategy

As this enemy only appears through Sandbox mode, no strategy section is made for its current version. Instead, a strategy section for the one that appeared without Sandbox mode in Blind Faith is listed instead.

• High DPS towers like the Ranger, Pursuit, Turret or Accelerator are recommended to take this down.
  • While the Null Engineer does stun, this is not a large issue as the stun time is quite low, allowing towers which are not stun immune to still perform decently.
  • The DJ Booth and Commander can be used to boost the statistics of these towers.
• As the Null Engineer initially spawns as a Boss, most forms of stalling are ineffective against it and it cannot have its Defense reduced.
  • For all of its future appearances, it only has the Stun Immunity, meaning it cannot be knocked back and stuns will only slow it down.

Gallery

Corpse Variants

• Second Corpse variant, current version (31 October 2025 – Present)
  Second Corpse variant, current version (31 October 2025 – Present)

Cutscenes

• Null Engineer in the Outpost 16 cutscenes.
  Null Engineer in the Outpost 16 cutscenes.

Miscellaneous

• Null Engineer on its Index icon.
  Null Engineer on its Index icon.

Update History

• 31 October 2025 - v1.79.0
  • Null Engineer added.
  • Bug: Default Shield Health of 4,500 is never applied, it only has Shield Health in modes with specific values set for them.
• 26 November 2025 - v1.80.1e
  • Null Engineer removed from the main game, now appears exclusively in Sandbox mode.
• 3 December 2025 - v1.82.0
  • Bug: Cannot be spawned in Sandbox mode.
• 4 December 2025 - v1.82.0b
  • Bugfix: Can now be spawned in Sandbox mode.
• 20 December 2025 - v1.83.0
  • Bugfix: Now has a default Shield Health value of 4,500.

Notes

Blind Faith (Null & Void Event, Night III) (31 October 2025 – 26 November 2025)
Previous Debut	Current Debut	Next Debut
Null Crook Boss Wave 8	Null Engineer Wave 10	Null Pyromancer Wave 11

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