You mean like changing your stats and giving yourself abilities, adding and removing experience points, etc.? If so, just list what you want to do and we can easily tell you the console command. --- But there's no sense crying over every mistake! You just keep on trying until you run out of cake!
Uh, I'm not sure what the other two are talking about. If you mean character editor in the sense of building your character's abilities and stats as they progress, in true rpg form, then yes the game has one.