Batman: Legends of the Dark Knight is a Batman title that is not a Comics Code Authority-approved comic. This means that it is intended for mature readers, as it may contain very graphic violence or adult themes.

LotDK is meant to provide authors/artists with a means to explore alternative views about the Dark Knight. This title is not part of the Batman continuity, with the one exception of two issues during the KnightQuest - The Search crossover. These stories are either from early in Batman's career (some say during the first three years, or just the first year), or in the future (although this has been rare). They are not, per se, Elseworlds titles. The artwork in LotDK can get pretty freaky at times, and sometimes the story is pretty twisted. The creative teams change per story arc. Recent examples, such as The Sleeper, have included mind-bending topics (like what happens when you're in a coma). DC appears to be using this title as a means of establishing post-Crisis or Year One events.