Maxperson
Morkus from Orkus
Only if Ted Danson is DMing.While this is true, If you're playing some kind of cosmic objective good vs. evil and actions objectively matter campaign The DM has to pretend to be objective and the players have to accept (pretend) that he is. Probably doesn't hurt to lay out some written guidelines.
And of course, in this case, I would recommend binging The Good Place which while it would show the futility of trying to lay out objective good and evil it would also show how fun it is to pretend to do so!