 Josh GatesSelf | Self |
 Stockton RushSelf (archive footage) | Self (archive footage) |
 Sara PowellSelf - Narrator (voice) | Self - Narrator (voice) |
| JJason NeubauerSelf - Chair, United States Coast Guard Titan Marine Board of Investigation | Self - Chair, United States Coast Guard Titan Marine Board of Investigation |
| KKelly SteeleSelf - Investigator U.S. Coast Guard Titan Marine Board of Investigation | Self - Investigator U.S. Coast Guard Titan Marine Board of Investigation |
| TTym CattersonSelf - Submersible Pilot, OceanGate Contract Safety Diver | Self - Submersible Pilot, OceanGate Contract Safety Diver |
| PPetros MathioudakisSelf - Underwater Electronics Technician | Self - Underwater Electronics Technician |
| AAntonella WilbySelf - OceanGate Contractor, Remotely Operated Vehicle Expert | Self - OceanGate Contractor, Remotely Operated Vehicle Expert |
| WWendy RushSelf - OceanGate Director of Communications | Self - OceanGate Director of Communications |
| TTony NissenSelf - OceanGate Director of Engineering 2016 - 2019 | Self - OceanGate Director of Engineering 2016 - 2019 |
| CChristine DawoodSelf | Self |
