Complex sentence: Dark Lords often do not actually engage in direct conflict with the heroes; frequently, they are dark gods, demons, or rulers of lands who exist in other dimensions, and/or maintain a dark, inaccessible fortress.
Split into simpler sentences: Dark Lords often do not actually engage in direct conflict with the heroes. Frequently, they are dark gods, demons, or rulers of lands who exist in other dimensions, and or maintain a dark, inaccessible fortress.