- "Is that a living experiement[sic]?! I didn't think they were real!
Take them out before they heal the enemies around them!" - ―Commander dialogue on Wave 16 (Intermediate)
- "Is that a Living Experiment?
What is Patient Zero's creature doing here? I have to report this ASAP." - ―Commander dialogue on Wave 15 (Challenge Trials)
- "It's a Living Experiment! I knew they were coming for me!
I will take more than this!" - ―Commander dialogue on Wave 11 (The Takeover Event, Pro)
Description
The Living Experiment is an enemy that appears in Intermediate, Challenge Trials and Molten Arena PVP modes. It also appears in The Takeover Event. It has a high amount of health, a below average speed and a decent amount of defense. Additionally, when it first spawns, it is a boss enemy, making it fully or partially immune to multiple forms of stalling. On some waves, it also spawns with various immunities, making it harder to kill.
Due to a bug, Living Experiments with the Slime attribute do not spawn the Slime upon death.
Appearance
The Living Experiment is a large humanoid with a waist, lower arms and lower legs in its rig. It has a light green skin color, and wears a tattered light blue hospital gown with a stitched seam going down the back, white bandages wrapped across its torso and metal plating with a glowing green piston on its back.
It has a thin right arm with an armband with chains on it, as well as a large bionic arm with multiple glowing green pistons and a green glass container. It also has a large metal neck-guard with glowing green parts, as well as glowing green eyes, patches of black hair and a metal device with green lights and light brown stitch lines surrounding it on its head.
It has a death animation, where it falls forward, with its bionic arm completely detaching in the process. The death animation is also accompanied by a sound, consisting of it grunting and metal thumping noises.
Strategy
- Towers with decent DPS, like the Minigunner, Militant or Cowboy are recommended against this.
- On its debut wave, the Living Experiment is surrounded by a hordes of Armored and Slows, which can be incredibly problematic.
- Area of effect towers like the Pyromancer, Rocketeer, or Mortar can excel at clearing out the hordes, allowing DPS towers to focus on the Living Experiment itself.
- As the Living Experiment has Defense, you can use Defense bypassing towers like the Trapper or Military Base to deal with this.
- As these towers also have AOE attacks, they can be also used to deal with the hordes of enemies it usually spawns with.
- Defense dropping towers, like the Pyromancer or Freezer can be used to reduce its defense, allowing your towers to deal more damage to it.
- While the Living Experiment does not have any immunities to crowd control by default, it is a large enemy, making certain forms of stalling like freeze or knockback less effective on it.
Sounds
| Sound | Description |
|---|---|
| Death | |
| When the Living Experiment dies | |
Gallery
Animations
Converted Variants
Corpse Variants
Thumbnails
Promotional Videos
Trailers
Miscellaneous
Trivia
- Despite the Commander stating that the Living Experiment can heal enemies around it, it has no such ability.
Update History
- 3 May 2024 - v1.20.0
- 10 May 2024 - v1.21.0
- Living Experiment is now immune to the fallout damage from the Nuke while it is a boss enemy.
- 18 May 2024 - v1.22.0
- Living Experiment is now immune to knockback while it is a boss enemy.
- 28 August 2024 - v1.29.0
- Bug: Can be slowed down by the DJ Booth while a boss.
- 31 August 2024 - v1.29.7
- Bugfix: No longer can be slowed down by the DJ Booth while a boss.
- 6 November 2024 - v1.40.0
- 16 December 2024 - v1.46.0
- Bug: Living Experiment's has no animations in its Index entry.
- 9 April 2025 - v1.60.0
- Now appears in Mid Rank PVP Test, where it has 3,000 health.
- 23 April 2025 - v1.62.0
- No longer appears in the PVP Test as it has been removed.
- 23 July 2025 - v1.71.0
- 12 September 2025 - v1.74.3a
- Now appears in Sk8 P4rk Pro difficulty as part of The Takeover Event.
- Has 3,250 health in Sk8 P4rk.
- Cash given is now mode dependent.
- Majority of modes now give
$625 every 25% health lost. - The Takeover Event Pro difficulty gives
$750 every 25% health lost. - Default value is
$1 every 25% health lost.
- Majority of modes now give
- Now appears in Sk8 P4rk Pro difficulty as part of The Takeover Event.
- 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 3,000 health in Challenge Trials.
- Gives
$300 every 25% health lost.
- Now appears in Challenge Trials.
Notes
- ↑ Only the Living Experiment on Wave 16 in Intermediate mode and Wave 15 in Challenge Trials is a boss.
| Intermediate | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Necromancer & Reaver Wave 14 |
Living Experiment Wave 16 |
Hazmat Wave 17 |
| Challenge Trials | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Bolt Wave 13 |
Living Experiment Wave 15 |
Elite Hazmat Wave 17 |
| Molten Arena PVP | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Reaver & Necromancer Wave 14 |
Living Experiment Wave 16 |
Hazmat Wave 17 |
| Pro (The Takeover) | ||
|---|---|---|
| Previous Debut | Current Debut | Next Debut |
| Reaver & Necromancer Wave 9 |
Living Experiment & Hazmat Wave 11 |
Failed Experiment Wave 13 |
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|---|
| Sandbox Only Enemies | ||
|---|---|---|
| Legacy Molten Mode | Normal • Speedy • Slow • Normal Boss • Hidden • Mystery • Necromancer • Molten • Slow Boss • Hidden Boss • Shock • Speedy Boss • Mystery Boss • Mystery Summoner • Molten Titan • Molten Boss | |
| Golden Mode | Abnormal • Quick • Heavy • Abnormal Boss • Shadow • Mystery • Dark Necromancer • Golden • Chained Boss • Shadow Boss • Charge • Tank • Mystery Boss • Boomer • Summoner Boss • 24 Karat • Gold Guard • Gold Titan | |
| Legacy Fallen Mode | Abnormal • Quick • Heavy • Abnormal Boss • Shadow • Mystery • Dark Necromancer • Fallen • Giant Boss • Shadow Boss • Glitch • Hazard • Tank • Mystery Boss • Boomer • Templar • Summoner Boss • Error • Fallen Hero • Fallen Guardian • Fallen King | |
| Brain Rot | Toilet • Streamer • Chad • Metal Toilet • Ninja Toilet • Png Bot2 • Png Bot • Brick Man • Armored Toilet • Megatron Toilet • Pro Streamer • Arrow • Png Bot4 • Png Bot3 • Toilet Boss | |
| Other | Slime • Elite Boomer • Dummy Boss • Imposter | |
| Legacy Enemies | ||
|---|---|---|
| Replaced | Blighted • Boomer 1 • Necromancer 2 • Mystery 2 • Gravekeeper • Super Mystery • Ultra Mystery • Uber Mystery • Ninja • Frost Hero • Strong | |
| Pre-MEGA | Carrier • Swarm • Tank 2 • Boomer 2 • Controlled • Shrike Crystal • Rusted • Witch Doctor • Tombstone • Frozen • Deep Freeze • Frost Hero | |
| Polluted Wasteland | Radioactive • Wasted Boss • Amalgamation • Rusher • Splitter • Split • Nuclear Fallen King | |
| Hidden Wave (Legacy) | Glitched Giant • Bug • Bruh • SCT • Jaxe • Mechanical Rot • Frost Hero • Developer 1 • Developer 2 • Developer 3 • Creator • A • B • C | |
| Other | Void • First Form | |






