- —Grandma
Appearing in "The Tunnel of Terror!"
Featured Characters:
Supporting Characters:
Antagonists:
- Axis
- Nazis
- "Earthmen" (First appearance)
- Numerous unnamed "Earthmen"
- Fritz Krone ⏵ (First appearance)
- German American Bund
- Numerous unnamed fifth columnists (Impersonates a street cleaner, a beggar, a police officer, sailors, and a soldier)
- Unnamed Lieutenant
- Adolf Hitler (Photo)
- Fritz Krone's Bodyguard
- Moeller
- Von Bosh
- Three unnamed soldiers
- "Earthmen" (First appearance)
- Imperial Japan (Referenced)
- Nazis
Other Characters:
- United States Army
- ⏴ Sgt. Michael Duffy (First name revealed)
- Numerous unnamed soldiers
- Numerous unnamed New Yorkers
- Construction Workers
- Unnamed Foreman
- Two unnamed construction workers
- Sun (Named only)
- Daily Globe (Named only)
- Mirror (Named only)
- News Journal (Named only)
- Unnamed Newscaster
- Mayor Fiorello La Guardia (Unnamed)
- Unnamed Captain (Steamship)
- United States Navy
- Four unnamed sailors
Races and Species:
Locations:
- Earth-616
- Earth
- North America
- United States of America
- New York
- New York City
- Manhattan
- Midtown
- Civic Center
- New York City Hall (First appearance)
- Governors Island (Mentioned in narration)
- Liberty Island (Cameo)
- Statue of Liberty (Cameo)
- East River
- Brooklyn
- Gabriele Towers
- Manhattan
- New York City
- Upper New York Bay (Cameo)
- New York
- United States of America
- London, England (Mentioned)
- North America
- Earth
Items:
Vehicles:
- Mary Ann (Ferry Boat) (First appearance)
Synopsis for "The Tunnel of Terror!"
Fifth columnist Fritz Krone sends his men to spread fear as part of his plan to evacuate Manhattan. Steve, Bucky, and Betty Ross encounter several such defeatists. In Times Square, a fifth columnist uses smoke bombs to spread fear of a Nazi gas attack until Steve reveals the smoke is harmless. While Betty pursues the fleeing bomber, Bucky chases another columnist. Meanwhile, construction under the East River destroys a tunnel wall. Armored figures emerge and attack, causing a panic. The mayor appeals for Cap to investigate. Cap battles the "Earthmen," but is captured and taken underground to a Nazi torture chamber. Betty and Bucky chase their separate quarries, converging at a waterfront warehouse where they find mines, grenades, and a secret entrance to a Nazi arsenal and shooting gallery. The Nazis overpower them and take them underground to join Cap in a dungeon. Krone tells them that the underground construction broke into their underwater "mine chamber," and that his operatives, dressed as "Earthmen," emerged to scare the authorities away from investigating. He releases mines to explode in the East River, but Cap, Bucky, and Betty escape. In Manhattan, Krone's commanding officer spreads further destruction with grenades, but Cap and Bucky storm his office where a ricocheting bomb blasts him out his window to his death. A US destroyer arrives in the East River. Cap and Bucky help them target the Nazis' underground chamber with depth bombs. The Nazis are forced to the surface, where Manhattan citizens fight them. Cap tights Krone, who surrenders. Cap reminds the crowd not to believe planted rumors.
Appearing in "To the Land of Nod"
Featured Characters:
Supporting Characters:
- Jefferson Vandermeer
- Sir Reginald Lamp O'Lime (Dream) (First appearance)
Antagonists:
- Morpheus
- Nightmare
- Moon-Mad Monster (Dream)
- Four unnamed tree creatures (Dream)
- Three unnamed gnomes (Dream)
- Four unnamed sharks (Dream)
Other Characters:
- Furniture Army (Dream)
- Bed (Dream)
- Dresser (Dream)
- Chair (Dream)
Races and Species:
Locations:
Synopsis for "To the Land of Nod"
Morpheus, the god of sleep, decides to give Jefferson Vandermeere a nightmare he will never forget. However Jefferson is saved by his old pal, the Imp.
Appearing in "The Secret of Lost River Cave"
Featured Characters:
- Dave (First appearance)
Supporting Characters:
- Dave's Mother (First appearance)
- Sam (Dave's Brother) (First appearance)
- Mr. Lewis (First appearance)
Other Characters:
- Dave's Father (Mentioned) (Deceased)
- Mr. Presser (Mentioned)
Races and Species:
Locations:
- Earth-616
- Earth
- United States of America
- Arias Arroyo (First appearance)
- Lost River Cave (First appearance)
- Lost River (First appearance)
- Commanche Draw (First appearance)
- Elida (First appearance)
- Lewis Grocery Store
- United States of America
- Earth
Synopsis for "The Secret of Lost River Cave"
Behind on the mortgage to the property their mother owns, Dave and Sam agree to sell their mother's diamonds to help pay off that mortgage. However, while on his way to town for that very purpose, Dave discovers strange fish in the Lost River Cave, fish that he can easily sell to pay off that mortgage.
Appearing in "The Invasion From Mars"
Featured Characters:
Antagonists:
- Nazis
- "Martians" (First appearance)
- Gool (Ludwig) (First appearance; dies)
- Numerous unnamed "Martians"
- "Martians" (First appearance)
Other Characters:
- United States Army
- Sgt. Michael Duffy ⏵
- ⏴ General Haywood ⏵ (Cameo)
- GCPD
- Three unnamed police officers
- Unnamed Newscaster
- Orson Wells (Mentioned)
- Gotham City Mayor (Apparent death)
- United States Navy
Races and Species:
Locations:
- Earth-616
Items:
Synopsis for "The Invasion From Mars"
In Gotham City, a policeman pulls over a car driven by a 10-foot-tall Martian who runs over two people. On leave, Bucky tackles the Martian who quickly knocks him away. Bucky returns to Camp Lehigh, but neither Duffy nor Steve believe him until a Martian raids the camp. Martians appear throughout the city. One man, recalling Orson Welles' "War of the Worlds," scoffs at radio reports, but a Martian breaks in and kills him and his family. Cap and Bucky arrive but the Martian escapes, dropping a German luger disguised as a "Martian Gun." Cap sends Bucky to summon the army. Gool, the Martian Warlord and his men raid City Hall and force the mayor to order an evacuation. Cap intervenes, but the Martians overcome him. Gool kills the mayor, intending to use Cap to broadcast a surrender order. Leaving Cap bound, the Martians activate their "red death ray machine" on the roof, aiming it at army-commandeered ferries in the river. Some ferries explode but Bucky finds a time-bomb on his ferry and throws it out a porthole, saving the ship. Bucky fights his way to City Hall and rescues Cap. They knock out the "death ray" operators, discovering the machine is a fake to make people believe its "ray," not time-bombs, destroyed the ferries. Remembering the luger, Cap unmasks one Martian as a human on stilts and realizes the "invasion" is a Nazi plot. Re-entering City Hall, Cap and Bucky defeat the Martians. Cap broadcasts to US naval forces, who sink the Nazi ships, then announces the invasion's true nature to the relieved city.
Appearing in "The Substitute Secret Stamp"
Featured Characters:
Supporting Characters:
- Freetown News
- Spud Sickles (Impersonates Secret Stamp)
- Mary Sickles (First appearance)
- Freetown Star News
Antagonists:
- Nazis
- Grandma (First appearance)
- Butch (First appearance)
- Unnamed Spy (First appearance)
- Adolf Hitler (Referenced)
Other Characters:
- Mr. Corbey (First appearance)
- FBI (Mentioned)
Races and Species:
Locations:
- Earth-616
- Earth
- North America
- United States of America
- Freetown
- Walsey House
- Freetown
- United States of America
- Berlin, Germany (Mentioned)
- North America
- Earth
Synopsis for "The Substitute Secret Stamp"
Spud Sickles decides that he should be as heroic as the Secret Stamp — by making his own costume and posing as the local hero himself — borrowing sewing supplies from his sister Mary to complete the task. Meanwhile, Roddy Colt, the real Secret Stamp is out selling his papers as usual when he notices that someone has recently purchased the old Wasley house. Attempting to bring up some business he overhears Grandma, a Nazi spy instructing her minions to capture the Secret Stamp, as Hitler has personally ordered her to eliminate the young hero has he is fast becoming a youth icon in the United States. Roddy rushes off to change into his guise of the Secret Stamp and smash the operation.
When the thugs are out looking for the Secret Stamp, they instead find and easily knock out Spud Sickles who was out in his Secret Stamp costume. Spotting the men carrying his impostor, the real Secret Stamp follows the spies back to their hideout where he confronts Grandma, but is also captured.
Taking both boys into their basement, Grandma has her men prepare to whip Spud. His cries for help are overheard by newspaper reporter Jerry Dash and Mary Sickles who burst into the house. Jerry helps free the true Secret Stamp who helps easily subdue the crooks. Jerry carries off Grandma to the FBI and Spud is unmasked as the false Secret Stamp.
Later, Roddy amusingly listens to Spud brag about how the Secret Stamp invited him to be his partner. When Roddy asks when he can meet the Stamp, Spud tells him that he and the Stamp are busy these days.