You should check out wiki of tf2, the original squad contained Abraham Lincoln, Nicola Tesla and even Sigmund Freud!
Note from wiki: The original team consisted of the same nine classes as the current organization. TheScout, inspired byBilly the Kid, took on the appearance of a young cowboy, complete with spurred boots. TheSoldier, who resemblesStonewall Jackson, dressed like a member of the Confederate States Army, utilizing a rifle, rather than a Rocket Launcher. In keeping with tradition, theDemoman, inspired byAlfred Nobel, was a one-eyeddynamite-loving prospector. Unlike his modern Russian counterpart, theHeavyresembledJohn Henry, preferring to put his enemies out of commission with a monstrous sledgehammer, whilst theSniper, likeDavy Crockett, partnered his trustyriflewith a coonskin cap. Prior to his appointment as President of the United States, thePyro,Abraham Lincoln, used an experimental Flamethrower to aid his comrades in battle. BLU team'sMedic,Sigmund Freud, appeared to retain his contemporary's love of theBonesaw, whilst the team'sEngineer, who resemblesNikola Tesla, was forced to make do with a satchel ofBlueprints, rather than aPDA. Finally, theSpyeschewed a balaclava in favor of a domino-mask and equally-sinister mustache in the style ofFu Manchu.