Team Fortress 2's Pyro class will lend his flare gun and flamethrower to the team, while Zoe from the first Left 4 Dead will take down enemies with her two pistols and propane tanks.

The three characters being added are from Valve’s franchises Team Fortress 2 and Left 4 Dead, and include the Pyro and Saxton Hale from TF2, and Left 4 Dead’s Zoey.

The PC version of Super Time Force will also throw in three familiar Valve faces: Team Fortress 2's Pyro, Left 4 Dead's Zoey, and the man, the myth, the legend... Saxton Hale!

Above: Team Fortress 2's payload gameplay seems to work well with the gas can mechanics from Left 4 Dead 2's scavenge mode Above: Part 1 of a Badwater Basin playthrough. Click here to download the map ...

The image you see above is a screengrab from the Left 4 Dead demo, ... However, it could be a hint that Valve is working on some much-requested Team Fortress 2 figurines -- or, ...

Valve has announced that hat-hungry Team Fortress 2 PC players who pre-order Left 4 Dead 2 on Steam or redeem a retailer-provided pre-order code can now don this fall's hottest TF2 fashion ...

The characters are Saxton Hale and Pyro from Team Fortress 2 and Left 4 Dead's Zoey. All three Valve characters, along with 50 new Helladeck challenge levels and the new Ultra Force power mode, ...