Warning: Spoilers for Batman & Robin: Year One #6 ahead! From the classic batarangs to the infamous "Bat Shark-Repellant," Batman'sarsenal has grown increasingly high-tech and complex over the years.

The Bat Shark Repellent is usually brought up to make fun of how goofy the ’60s Batman was, but hear us out. One of Batman’s most defining characteristics is his ability to be prepared for ...