One of the most exciting aspects of this run was the introduction of characters who didn't exist in the 60s. The writers "retro-fitted" modern villains like Killer Croc , Bane , Harley Quinn , and Scarecrow into the 1966 aesthetic. Seeing a 1960s-style Harley Quinn is a particular highlight for fans.
Batman frequently stops to give Robin lessons on civic duty, safety, and grammar.
Adaptations of scripts that were written for the TV show but never filmed (most notably the Harlan Ellison story that introduced Two-Face to the '66 universe). 4. Tone and Appeal