When one plays a character that can never be destroyed, harmed, etc. The character, however, can hurt and/or kill the other characters without giving the other characters a chance.
This is highly illegal in most, if not all, roleplays.
Sarah = Regular player
Bob = Godmodder
-Sarah aims her arrows at Bob and then releases-
-Arrows go through Bob and Bob jumps up and reaches into Sarah's chest and drags out her beating heart, squeezing the life out of it and killing her-