|Gender:||Male (including the Little Girl, and a couple of Robo-Spiders being released from its back)|
|First appearance:||Conker's Bad Fur Day|
|Character type:||Non-Playable Character
The experiment is a huge, spider-legged cyborg Tedi that appears in the It's War chapter of Conker's Bad Fur Day and Conker: Live and Reloaded. It, coupled with the Little Girl, tries to kill Conker with its powerful arsenal of weapons. Its main weapon is its chainsaw, that can kill Conker in one hit.
Conker hops aboard the Class 22 Tank and shoots down the heavy weapons that the Experiment tries to finish him off with. Hitting the Little Girl with a cannon shot will distract the Experiment as it tries to get her back onto its hand - this leaves him open to attack his rear-side opening. Three hits will fell him, which would activate the Robo-Spiders (in which the Little Girl refers to as her little babies) from his back opening to destroy the Tank. This leads to the Countdown.
- He has a left bionic arm with claws, a stitched tummy, mechanical spider legs, headlights, a huge hole on his back and appears to have a serious face. He uses the little girl as a puppet and making her feel like she is talking to Conker the Squirrel.
- Just like Heinrich, if the Experiment hits conker when outside the tank, conker will instantly die, no matter how many anti-gravity chocolate you have in the life bar.
- If the Experiment hits the tank with its saw, it will take away one chocolate piece.
- It shares the same name as Regan MacNeil from "The Exorcist"