

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.

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.

The TFC Mercs were hired by Gray Mann to seek out the Administrator and retrieve the Australium she stole from Mann Co.
