STEM (Upgrade)

STEM is the main antagonist of the 2018 film Upgrade. He is an AI created by the late Eron Keen and the artificial implant of Grey Trace.

He is voiced by Simon Maiden.

Victims

• Asha Trace - Shot in the stomach by Fisk with his gun implant on the orders of STEM.
• Serk Brantner - Stabbed in the back and mouth split open by Grey Trace while under the control of STEM when he placed a kitchen knife in his mouth and kneed his head into the blade.
• Three Unnamed Members of Tolan's Gang - Beaten to death by Grey Trace while under the control of STEM.
• Tolan - Face slashed multiple times by Grey Trace with a knife while under the control of STEM.
• Fisk's Unnamed Friend - Head blown off by Grey Trace with his own gun implant while under the control of STEM when he twisted his arm to face his head.
• Fisk Brantner - Back of his head shoved onto a piece of broken glass by Grey Trace while under the control of STEM.
• Two of Eron's Unnamed Bodyguards - Shot in the head by Grey Trace with his gun implant while under the control of STEM.
• Eron Keen - Stabbed in the side of the head by Grey Trace with a knife while under the control of STEM that was stabbed through his hand.
• Detective Cortez - Shot in the chest by Grey Trace with his gun implant while under the control of STEM.

Kill Count

• Total - 12
  • 10 Men
  • 2 Women

Characters Killed by STEM

1. Asha Trace - Shot in the stomach by Fisk with his gun implant on the orders of STEM.
2. Serk Brantner - Stabbed in the back and mouth split open by Grey Trace while under the control of STEM when he placed a kitchen knife in his mouth and kneed his head into the blade.
3. Tolan - Face slashed multiple times by Grey Trace with a knife while under the control of STEM.
4. Fisk Brantner - Back of his head shoved onto a piece of broken glass by Grey Trace while under the control of STEM.
5. Eron Keen - Stabbed in the side of the head by Grey Trace with a knife while under the control of STEM that was stabbed through his hand.
6. Detective Cortez - Shot in the chest by Grey Trace with his gun implant while under the control of STEM.