Mr. Kline

A shadowy figure who slipped into the Marvel Universe at the dawn of the Bronze Age, Mr. Kline made his mark in Daredevil #81 in 1971, brought to life by Larry Ivie and Bob Powell. He's the kind of enigmatic presence who keeps rarefied company — sharing pages with Iron Man, Matt Murdock, and even the Crimson Dynamo — which tells you something about the high-stakes corners of Marvel he inhabits. Turning up across Daredevil, Iron Man, and the Black Widow Epic Collection, he's a cult figure for Bronze Age devotees who love digging into the era's most intriguing mysteries.