Like most ARPGs, a core aspect of the Diablo series is character and build customization around the different classes available in each entry, and Diablo 4 offers some of the most unique class mechanics to date. However, the series has had its fair share of iconic classes, spanning all the way back to the original 1996 game, that have been noteworthy for their role as the game's most powerful, easiest to use, or for a combination of elements. While Diablo 4 players are busy building their characters in preparation for the game's upcoming Season 1 content, it's important to look back at the classes that have had the most impact on the franchise.