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"A cleansing fire always burns little Mandus, but it purifies and it makes anew."
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For the Amnesia: A Machine for Pigs monster type by the same name, see Engineer (Manpig).

This world is a machine! A Machine for Pigs! Fit only for the slaughtering of pigs!

The MachineStreets

The Engineer is the main antagonist from Amnesia: A Machine for Pigs. The Engineer was the wicked half of Oswald Mandus’ soul, torn apart from his body and encased in the Machine. They controlled both the slaughtering of humans and was partially responsible for the creation of the Manpigs.


The Machine was created to harvest people and automate human sacrifice on an industrial scale in the hope that it might prevent the horrific events of the 20th century. It was envisioned by Oswald Mandus after the disastrous trip to the sacrificial steps of an Aztec temple in Mexico when he came into contact with the Orb.

At some point, Mandus integrated part of his own fragmented soul into the Machine, rendering it sentient as the Engineer. With a metal body and human mind, he assisted Mandus in the ritual slaughter and creation of Manpigs. He was shown to be both cunning and intelligent, as he tricked Mandus into reactivating the Machine after the latter woke up with amnesia, and later sent multiple Manpigs to trap Mandus as he tried to sabotage it yet again. He also had knowledge of ancient history, referring to himself as the jaguar-faced man and a feathered serpent, attributes of the Aztec God Quetzalcoatl, who in Aztec myth fled across the Atlantic after his removal from the sun throne, causing an apocalypse.


The Engineer embodies the bitterness, the hatred, and the misanthropic feelings towards humanity in Mandus' heart. However, he appears to also be constructed of the twisted, selfish love the Mandus had for his children—shown by his reasoning under the madness that it was better for his children to die than to live on to eventually suffer a painful death later.

Using the Machine to process Aztec-style human sacrifices on an industrial scale, the Engineer hoped to achieve godhood in order to prevent the coming wars of the 20th century. Despite these seemingly altruistic intentions, he seems to hold contempt for mankind's inability to care for itself. In his final moments, the Engineer pleaded for Mandus to allow him to finish the task he was constructed for—to rid humans of their "painful, stupid, pointless lives" after he had seen the future and experienced the terrible events to come for so many humans.

Physical appearance[]

As Mandus destroys the final components of the Machine, there is a large metal container connected to various pipes and lights with what appears to be a shriveled adult male inside it, implied to be the physical, organic container of the Engineer.


  • It is worth noting that the Engineer tells Mandus in the final sequence of the game that "we are one, our souls are entangled!" This implies that they are the same person while being separate entities at the same time.
  • At earlier points in the game, the Engineer recounts how he was placed "on the mantelpiece," which implies that he came from the Orb and fused with the hateful side of Mandus' broken soul. It could mean the spirit of the Orb or even the Shadow — neither is confirmed.


  • "Precious eagle cactus fruit... help us."
  • "Daddy, Daddy, please don't kill me."
  • "They will eat them Mandus, they will make pigs of you all and they will bury their snouts into your ribs and they will eat your hearts!"


  • It's unknown how the body of a shriveled adult male is in the tube operating or if Mandus kidnapped or offered the male individual to operate the Machine in the first place, in theory, it might've been a corpse that Mandus gave life into due to his soul being split into two.
  • Mark Roper, the Engineer/Machine's voice actor, also voices the unnamed Professor heard speaking with Mandus on the phonographs.[2]


  1. Dialogue (AMFP) – "And as the dust settled on my open eyes and we lay together embraced forever, I heard miles above us, the sounds of the city turning over in its sleep. A church bell ringing out. And in that moment, the new century was born."
  2. 2.0 2.1 Amnesia: A Machine for Pigs – English credits: "The Machine and The Professor were played by Mark Roper"