According to legend he was a great warrior whose actions were deplorable and his punishment is to guide home as many souls as people he killed. The stripes over each foot are supposed to represent chains that hold him bound until his task is fulfilled.
It is uncertain whether there is any historical evidence that Felled ever existed as there are many warriors of old that could fit his description
a less popular interpretation is that he was never mortal in the first place and was created to oversee battles and wars and to keep count of the dead, which is why he was reported to be seen on battle fields tallying up the fallen