Necrotic Skeleton

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

Necrotic Skeleton
Mode Appearance	Fallen Challenge Trials Western Challenges Juggernaut Jailed Towers Legion Vanguard
Wave Debut	26 (Fallen & Challenge Trials) 22 (Western)
Statistics
Base Health	1,000 (Fallen & Sandbox) 1,500 (Challenge Trials) 1,250 (Western)
Health Scaling	Trio - 1,110 (Fallen) Quad - 1,210 (Fallen)
Speed	Fast (7)
Cash Given	$2,000 on death (Fallen) $1,500 on death (Challenge Trials) $2,750 on death (Western) $5 on death (Default)
Spawned By	Fallen Summoner Fallen King Awakened Fallen King
Hidden?	Variable
Flying?	No
Ghost?	No
Lead?	No
Attributes	Bloated (Variable) Nimble (Variable)
Abilities
Ability 1	Gooey Demise - Upon death, applies an 60% Firerate Debuff (150% increase) to towers for 4 seconds and deals 20 damage to units in an explosion radius of 15.
Ability 2	Essence of Life - Upon death, leaves four purple goo puddles on the path that last 10 seconds. These heal any enemy that walks over them by 2 every 0.05 seconds.

"That Skeleton look unstable! It must be cursed with Fallen magic!
Get some extra firepower on the field if you can!"

―Commander dialogue on Wave 26 (Fallen)

Description

The Necrotic Skeleton is an enemy that appears in Fallen mode, Challenge Trials and Badlands II. In Challenge Maps and The Takeover Event, it does not appear naturally, and is instead summoned by the Fallen King and Fallen Summoner. In all other modes, it does appear naturally, though in Badlands II, it is always a Hidden enemy. It has a decent amount of health and walks quite fast. The Necrotic Skeleton is also a support enemy, as it has two abilities which debuff towers and buff enemies, both upon death.

Its first ability is Gooey Demise, which causes it to apply a 60% Firerate Debuff (150% increase) to every tower in its 15 radius for 4 seconds. Its second ability is Essence of Life, which makes it leave four puddles of purple goo on the path. These puddles heal any enemy that walks over them by 2 every 0.05 seconds. They last 10 seconds.

Appearance

The Necrotic Skeleton is made entirely of sand colored parts that resemble a skeletal humanoid. It does not have a full torso, but instead has the bone cage for it. Its head is a skull with large neon blue eyes and horns. It wears a grey chestplate and shoulder-pads.

Upon death, the Necrotic Skeleton will fall over and create a trail of purple goo in front of it.

Strategy

• The Necrotic Skeleton is a support enemy. Upon death, it will both debuff towers and buff enemies.
  • It will debuff towers by applying an 150% Firerate Debuff to them, though it is quite short.
    • The Commander and Medic can be used to partially mitigate its Firerate Debuff.
  • Its puddles will heal any enemy that walks over it by 2 health every 0.05 seconds, regenerating their health.
    • As it is rather fast, it will get to the front of enemies quite quickly, allowing it to regenerate their health. Additionally, it will be swiftly killed by towers as its health is much lower than most enemies that appear around the same time as it.
• High DPS towers, like the Minigunner, Turret and Accelerator can be quite effective against this, as it has quite low health.
  • High DPS towers with splash damage capabilities, such as the Ranger and Pursuit can be quite useful, as they can damage both the Necrotic Skeletons and the enemies that summoned them.
  • In Badlands II, it is recommended that these towers have hidden detection, due to the Necrotic Skeleton being a Hidden enemy there.
    • The Firework Technician, Medic or Ace Pilot can be used to give hidden detection to your towers, if you lack it.
• Area of effect towers, like the Mortar, Rocketeer and Electroshocker can be quite useful at killing the Necrotic Skeletons, as they spawn in hordes.

Gallery

Animations

Current stun animation (2 August 2024 – Present)

Converted Variants

Green variant, current version (11 June 2025 – Present)

Corpse Variants

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

Thumbnails

Necrotic Skeleton on the game thumbnail.

Trailers

Valentines Skins - Tower Defense Simulator

Necrotic Skeleton in the game trailer.

Summer Battlepass - Tower Defense Simulator

Necrotic Skeleton in the game trailer.

Renders

Necrotic Skeleton on a render.

Necrotic Skeleton on a render.

Miscellaneous

Necrotic Skeleton on its Index icon.

Update History

• 2 August 2024 - v1.27.0
  • Necrotic Skeleton added.
  • Bug: Poison and electric defense dropping towers do not drop its defense.
• 6 November 2024 - v1.40.0
  • Bugfix: Poison and electric defense dropping now drops Necrotic Skeleton's defense, though the Jester still cannot drop it.
• 5 February 2025 - v1.52.0
  • Now appears in Badlands II.
    • Has 1,250 health in Badlands II.
  • Now gives $2,750 on death.
• 9 April 2025 - v1.60.0
  • Now appears in High Rank PVP Test.
• 11 June 2025 - v1.67.0
  • Now appears naturally in Fallen Mode on Wave 26.
  • Health increased from 750 to 1,000.
  • Defense removed.
  • Speed increased from Slightly Fast (5) to Fast (7).
  • Now gives $2,000 on death in Fallen.
• 12 September 2025 - v1.74.3a
  • Now appears in Sk8 P4rk Extreme difficulty as part of The Takeover Event.
    • Has 1,000 health in Sk8 P4rk.
• 22 September 2025 - v1.74.3g
  • No longer appears in Sk8 P4rk, as it has been removed.
• 24 September 2025 - v1.75.0
  • Now appears in Challenge Trials.
    • Has 1,500 health.
    • Gives $1,500 on death.

Fallen
Previous Debut	Current Debut	Next Debut
Fallen Hero Wave 25	Necrotic Skeleton & Breaker4 Wave 26	Fallen Rusher Wave 28

Challenge Trials
Previous Debut	Current Debut	Next Debut
Giant Boss Wave 25	Necrotic SKeleton & Breaker4 Wave 26	Tanker Wave 28

Western (Badlands II)
Previous Debut	Current Debut	Next Debut
Breaker, Breaker3 & Breaker4 Wave 21	Necrotic Skeleton Wave 22	Tanker Wave 24