In the world of Erebus, the words "good", "neutral", and "evil" have very specific meanings. Those gods (Agares, Mulcarn, etc.) who rebelled against the One are considered evil. Those gods who actively fought against those who rebelled are considered good. Finally, those gods who did not rebel but also did not take an active role in fighting those who did are considered neutral. These alignments are in turn passed on to each god's followers/worshipers. The words have no other meaning and hence bear little resemblance to their more typical definitions in our world.