Based on his explanation about his past during his surgery to graft an Uberheart into the Heavy's chest, he was once a surgeon but had his medical license revoked after causing the entire skeleton of a patient to disappear. The Medic is considered the best off while the rest of the mercenaries were fired, presumed to be working as a highly paid Doctor. It later becomes apparent he is now working for the Team Fortress Classic Team, who has been hired by Gray Mann to find the Administrator and kill the TF2 mercenary team. After the Classic Team killed Sniper, Medic used that opportunity to experiment on the corpse. He successfully revived Sniper even after twelve hours of brain death, and warned him about how his experiments were very expensive, so it would be a bad idea to get killed again. Classic Heavy caught him doing so and was furious, and then killed Medic's pet dove, Archimedes. Medic was able to revive him too. Even as Medic prepared to return to the field, Classic Heavy ordered him to remain in his lab, angering the Medic. Medic rejoins his team, and when their blood is sucked out by robots, puts the blood back in. Classic Heavy turned up and ordered Medic to help sew the immortality machine into him, but to his surprise Medic fought back. However, Classic Heavy overcame Medic, and was about to kill him when Heavy showed up. Just before fighting Heavy, Classic Heavy shot Medic twice in the chest, killing him. However, it is revealed that Medic had made a deal with Satan, and owes his soul to him. But before he completes the deal, he informs Satan that he has surgically grafted eight more souls onto his own and so Satan is not a majority shareholder.