Mr. Kline

Marvel

Also known as Assassin,MK-9

Appearances

Daredevil #81 — 1971-11-00
Iron Man #44 — 1972-01-00
Captain America #151 — 1972-07-00
Namor, the Sub-Mariner #6 — 1990-09-00
Black Widow Epic Collection #1 — 2019-00-00