Spectre

Stepping out of the Silver Age and into nearly five decades of comics history, this DC incarnation of Spectre made their catalog debut in Paragon Golden Age Greats #1 in 1968, courtesy of creator Bill Black. With appearances spanning all the way to 2017, Spectre keeps genuinely rarefied company — sharing pages with the likes of Superman, Green Lantern, Clark Kent, Bruce Wayne, and Firestorm across landmark collections including Day of Judgment and Absolute Infinite Crisis. Six catalog appearances may sound modest, but when your name turns up in volumes with that kind of cosmic weight and those kinds of co-stars, every appearance counts — this is a character worth tracking down for any serious DC collector.