Appearing in "The Fearful Secret of Bucky Barnes!"
- Baron Wolfgang von Strucker (Appears in flashback)
- Avengers (Mentioned)
- Baron Wolfgang von Strucker (Mentioned)
- Bucky (James Barnes) (Mentioned) (Deceased)
- Walter Cronkite (Last appearance) (Appears on a computer screen, TV, or hologram only)
- Falcon (Sam Wilson)
- Berkeley Police Department (Only in flashback)
- Batroc's Brigade (Only in flashback)
- Doctor Doom (Victor von Doom) (Only in flashback)
Races and Species:
- Earth (Main story and flashback)
- United States of America (Main story and flashback)
- Atlantic Ocean (Main story and flashback)
- Latveria (Only in flashback)
- Heaven (Invoked)
- Captain America's Uniform and Shield (Main story and flashback)
- Porcupine Armor (Only in flashback)
- Doctor Doom's Armor (Only in flashback)
- World War II (Mentioned)
Synopsis for "The Fearful Secret of Bucky Barnes!"
Modok explains in flashback of his plan to defeat Captain America by placing an android at his side. When it comes down to it, the android's implanted memories of Bucky's loyalty wont allow him to kill Captain America, and it short circuits.
The horrible secret of Bucky Barnes! The hideous threat of the superhuman Modok! And the most dramatic climax of the month!
A flashback in this story affects the chronology of the following characters:
- This issue features a letters page, Let's Rap With Cap. Letters are published from Paul Scott, Rick Miller, Edward Liptak, and Ferdinand Skribeleit.
- This issue also features an advertisement for Conan the Barbarian #2.