Although there isn't really any evidence to support this. However it is possible that TF2 Spy could of murdered TFC Engineer to assume his identity. Perhaps due to the fact he is apparently TF2 Engineer's father.

TFC Engineers fate seems to be left ambiguous.

For some reason, the original TFC Medic is missing from the group, this may imply that he is either deceased or retired from the team.

The TFC Engineer with a young TF2 Engineer.

TF2 Medic - Defected from the team after constant abuse from TFC Heavy.

She was killed after Zhanna dropped a live incendiary grenade down her suit.

TFC Spy - Killed after TF2 Soldier punched him hard enough to snap his neck.

Was strangled to death by TF2 Spy using his foot shackles after Zhanna (TF2 Heavy's sister) punched TFC Demoman to the ground. The father of TF2 Engineer, and the son of Radigan Conagher. BFG: The Heavys Assault Cannon, the Medics Super Nailgun, the Soldiers.

TFC Engineer - Real name: Fred Conagher. Team Fortress Classic is a 1999 multiplayer First-Person Shooter by Valve.

Killed by TF2 Sniper using his own Sniper rifle against him. The class is ineffective in a direct firefight, so Snipers should always try to stay away from close combat as they have a large advantage over all classes from a distance. He moves at a medium speed, and his weapons are designed to destroy all enemies at long-range.

He possesses average health and the weakest armor. Killed along with TFC Scout by TF2 Pyro using his flamethrower. The Sniper is a playable class in Team Fortress Classic. Killed along with TFC Soldier by TF2 Pyro using his flamethrower. Seemingly the leader, killed by TF2 Heavy when he pulled out the life-extending machine off him.

Although the TFC Mercs had an army of robots at their command and TFC Heavy briefly gaining the immortality he craved, they where eventually defeated by their adversaries. However the TF2 Mercs managed to escape captivity started killing their captors. They continue with their mission, but now want all the stolen Australium for themselves so they can live forever. So true to the saying: 'Never trust a Merc', the TFC Mercs betray Gray Mann, tearing the life-extending machine from his back and leaving him to die. But after capturing the TF2 Mercs and Miss Pauling for integration on the Administrator's whereabouts, the TFC Mercs learn that their employer has been using a machine powered by Australium to achieve immortality. The TFC Mercs were hired by Gray Mann to seek out the Administrator and retrieve the Australium she stole from Mann Co.

Team fortress classic heavy