- Both of Riley's Parents - Killed in a fire off-screen prior to the game, mentioned.
- Unnamed Male Construction Worker - Killed by numerous Bigger Bodies toys off-screen prior to the game, mentioned.
- Unnamed Male Train Conductor - Killed by numerous Bigger Bodies toys off-screen prior to the game, body seen.
- Riley - Presumably died of starvation off-screen prior to the game, body seen.
- Two Unnamed Security Guards - Killed off-screen prior to the game, bodies seen.
- Unnamed Woman - Killed by Experiment 1170: "Huggy Wuggy" off-screen, screams heard in the Warden Office tape.
- 11 Unnamed Security Guards - Killed off-screen prior to the game, bodies seen.
- Filatro - Killed off-screen prior to the game, body seen.
- Baltazar - Killed off-screen prior to the game, body seen.
- Anaya - Killed off-screen prior to the game, body seen.
- Zidan - Killed off-screen prior to the game, body seen.
- Bryant - Killed off-screen prior to the game, body seen.
- McLeroy - Killed off-screen prior to the game, body seen.
- Mitchell - Killed off-screen prior to the game, body seen.
- Madison - Killed off-screen prior to the game, body seen.
- Pavlovic - Killed off-screen prior to the game, body seen.
- Ceccherelli - Killed off-screen prior to the game, body seen.
- Stutte - Killed off-screen prior to the game, body seen.
- Gafaru - Killed off-screen prior to the game, body seen.
- Kolovos - Killed off-screen prior to the game, body seen.
- Drake - Killed off-screen prior to the game, body seen.
- Castillo - Killed off-screen prior to the game, body seen.
- Statirova - Killed off-screen prior to the game, body seen.
- Ouchan - Killed off-screen prior to the game, body seen.
- Hein - Killed off-screen prior to the game, body seen.
- Hike - Killed off-screen prior to the game, body seen.
- Munoz - Killed off-screen prior to the game, body seen.
- Selva - Killed off-screen prior to the game, body seen.
- Captain AJ - Killed off-screen prior to the game, body seen.
- Experiment 1163: "Pianosaurus" - Dismantled and decapitated before being consumed by Jack Ayers/Kevin Barnes/Matthew Hallard/Experiment 1322: "Doey the Doughman".
- At Least 66 Unnamed People - Killed in the Theater Incident off-screen prior to the game, caused by Dr. Harley Sawyer/Experiment 1352: "The Doctor", mentioned.
- 13 Unnamed People - Died off-screen prior to the game, body bags seen.
- Unnamed Security Guard - Killed off-screen prior to the game, body seen.
- Quinn Navidson/Experiment 1166: "Yarnaby" - Head stuck on a chain while chasing the Protagonist who eventually fell into a lava pit, burned alive.
- Unnamed Playtime Co. Worker - Died off-screen prior to the game, body seen.
- Three Unnamed People - Died off-screen prior to the game, body bags seen.
- Unnamed Playtime Co. Worker - Died off-screen prior to the game, body seen.
- Unnamed Playtime Co. Worker - Killed off-screen, body seen.
- Cassie/Experiment 1391 - Died from failed procedure off-screen prior to the game, body seen.
- Timmy/Experiment 1393 - Died from failed procedure off-screen prior to the game, body seen.
- Danny/Experiment 1395 - Died from failed procedure off-screen prior to the game, body seen.
- Experiment 1398 - Died from failed procedure off-screen prior to the game, body seen.
- Experiment 1399 - Died from failed procedure off-screen prior to the game, body seen.
- Unnamed Playtime Co. Worker - Killed off-screen, body seen.
- Simon Smoke Toy - Electrocuted to death inside a capsule by the Protagonist. (Determinant)
- Dr. Harley Sawyer/Experiment 1354: "The Doctor" - Electrocuted to death after the Player shut down his operating system.
- Susan Ayers - Killed by Jack Ayers/Kevin Barnes/Matthew Hallard/Experiment 1322: "Doey the Doughman" off-screen prior to the game, recording heard.
- George Ayers - Killed by Jack Ayers/Kevin Barnes/Matthew Hallard/Experiment 1322: "Doey the Doughman" off-screen prior to the game, recording heard.
- Six Mini Kissy Missy Toys - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Five Bubba Bubbaphant Toys - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Five Hoppy Hopscotch Toys - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Four DogDay Toys - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Four PickyPiggy Toys - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Three CatNap Toys - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Three KickinChicken Toys - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Three Mini Mommy Long Legs Toys - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Two Bobby BearHug Toys - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Boogie Bot Toy - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- CraftyCorn Toy - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Scout - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Medic - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Izzy - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Odd Ed - Blown up when the bombs exploded, due to Experiment 1006: "The Prototype" moving them from the Foundation to Safe Haven.
- Jack Ayers/Kevin Barnes/Matthew Hallard/Experiment 1322: "Doey The Doughman" - Frozen alive and crushed to death by a large hydraulic press activated by the Protagonist.
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