Captain Marvel, Jr. [Freddy Freeman]; King of Worries [Len Lightheart] (villain, introduction); Worry Shadows (villain, introduction)
Synopsis
When optimist Len Lightheart starts the Anti-Worry Club, his psychological approach of people talking to each other about their worries is so effective that the "worry shadows" (shadowy creatures that whisper doubts and concerns into people's minds) report back to the King of Worries about their failures.
The quiz questions are all on the subject of the navy; possibly intended as an entry in Don Winslow's Navy Quiz for an issue of Don Winslow of the Navy.