- Complete Monster (March 1943's "Metal Monsters"): Admiral von Roeder is a high-ranking Nazi dispatched by the Führer himself to find and destroy Namor the Sub-Mariner. After quite literally crushing the information he wants out of a young boy whose corpse he cruelly throws away like garbage, von Roeder decides to wipe out not just Namor but everyone associated with him, invading Namor's undersea city in a giant mech and commanding his army to attack and kill everyone.
- Hilarious in Hindsight: Early on, Timely Comics briefly considered changing their company name to Marvel Comics to coincide with this comic series' success, but the change didn't stick at the time. Two decades later, they really would settle on the name of Marvel Comics.
- For his first few appearances, the Human Torch was dressed in a blue jumpsuit (eventually changed to a red one) which almost foreshadows the kind of uniform worn by the more famous Human Torch from decades later.
- Nightmare Fuel: The Human Torch's odd looking, out-of-character and monster-like appearance on the very first cover.
YMMV / Marvel Mystery Comics