- Script
- Robert Schaefer; Eric Freiwald; ? (traduction)
- Pencils
- Russ Manning
- Inks
- Russ Manning
- Colors
- ?
- Letters
- ?
- Genre
- science-fiction (science fiction); super-héros (superhero)
- Characters
- Magnus; Xyrkol (first appearance); Leeja Clane; Senator Clane; giant robot
- Synopsis
- Xyrkol, self-exiled in space, creates a giant robot to subdue North Am. Magnus blocks him and destroys the robot's "brain."
- Reprints
This story marks the first appearance of a female scientist in this series.