One fan theory suggests Ratman originated from a genetic experiment on a monkey at Humane Labs that went horribly wrong, causing it to flee into the tunnels and sewers. While the facility does perform chemical tests on monkeys and rats exist in the game, this connection remains unconfirmed speculation.
Source: Humane Labs and Research — CC BY-SA
The cages at Humane Labs where test monkeys are kept — ground zero for the Ratman genetic experiment theory.
The main entrance to Humane Labs — where whatever escaped supposedly fled into the underground.
The facility's cooling tunnel — a dark passage that screams horror movie, and where theorists say Ratman made his escape.
Another animal cage in the lab section — proof that live testing happens here, making the Ratman theory hit different.
The full exterior of Humane Labs — this soulless desert building hiding dark secrets, Ratman possibly among them.
Inside the lab, packed with chemical equipment and weird rooms — where one botched experiment could birth an urban legend.
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