Crowdsurfed into an acid bath in the last game, only his bones could be recovered. As it turned out, the bones were all that was needed. Ralf was a good friend of Josef and worked as a lineman, often soaking up hits so that Josef could slip past. After being re-pressed back into unlife by Robbie, he's often not on the line of scrimmage. Turns out that having flesh on your bones helps survival quite a bit.