Action Comics Vol 1 400

"Superman: "My Son... Is He Man or Beast?"": Superman is named guardian of Gregor Nagy, a late friend's son, only to discover that the youth has gained the power to metamorphosize his body into animal forms from an experiment of his father's -- and that he resents Superman

Superman: "My Son... Is He Man or Beast?"
Cover
Action Comics Vol 1 #400
May, 1971
Executive Editor	Carmine Infantino
Cover Artists	Neal Adams Dick Giordano
Superman: "My Son... Is He Man or Beast?"
Writers	Leo Dorfman
Pencilers	Curt Swan
Inkers	Murphy Anderson
Editors	Murray Boltinoff
Superman and Supergirl: "Duel of Doom!"
Writers	Leo Dorfman
Pencilers	Curt Swan
Inkers	Murphy Anderson
Editors	Murray Boltinoff
Previous Issue	Action Comics # 399
Next Issue	Action Comics # 401

For one brief moment, I had a son-- The son I always dreamed of! Goodbye, Gregor! I'll always remember you!

— Superman

Action Comics #400 is an issue of the series Action Comics (Volume 1) with a cover date of May, 1971.

Synopsis for Superman: "My Son... Is He Man or Beast?"

Superman is named guardian of Gregor Nagy, a late friend's son, only to discover that the youth has gained the power to metamorphosize his body into animal forms from an experiment of his father's -- and that he resents Superman.

Appearing in Superman: "My Son... Is He Man or Beast?"

Featured Characters:

• Superman (Flashback and main story)

Supporting Characters:

• Changeling (Gregor Nagy) (Single appearance)

Antagonists:

• Ivory poachers

Other Characters:

• Jan Nagy (Single appearance)
• Denise
• FBI

Locations:

• Earth-One
  • Daily Planet
  • Africa
  • Fortress of Solitude
  • Japan
  • Pacific Ocean

Items:

• Metamorphon (Single appearance)
• Superman Robots
• Superman's Costume
  

Synopsis for Superman and Supergirl: "Duel of Doom!"

Two Kandorian students, Yllura and Arvor, face a graduation exercise of conducting "an original exploration into Kandor's past." Both are rivals, with Yllura idolizing Supergirl and Arvor hero-worshipping Superman. But, when each gets in trouble on their archaeological trip, they help each other to reach safety. Realizing that teamwork is necessary for success, Arvor and Yllura call off their rivalry. Later, they are awarded a joint trophy by Superman and Supergirl.

Appearing in Superman and Supergirl: "Duel of Doom!"

Featured Characters:

• Arvor (Single appearance)
• Yllura (Single appearance)

Supporting Characters:

• Superman (Flashback and main story)
• Supergirl (Flashback and main story)

Antagonists:

• Kvorg (As an illusion only) (Single appearance)
• Brainiac (Flashback only)

Other Characters:

• 
  

Locations:

• Kandor

Notes

• "Duel of Doom!" is reprinted in Superman: From the 30's to the 70's.
• Leo Dorfman is credited as Geoff Brown in this issue.

• Superman appeared last in World's Finest Comics #202. He appears next in Superman #238.

• Supergirl appeared last in Adventure Comics #405. She appears next in Action Comics #403.

See Also

• Cover gallery for the Action Comics series
• Images from Action Comics Vol 1 400

Recommended Reading

• Superman Family Recommended Reading
  • Action Comics (Volume 1)
  • Adventure Comics (Volume 1)
  • DC Comics Presents (Volume 1)
  • Superboy (Volume 1)
  • Superboy (Volume 2)
  • Supergirl (Volume 1)
  • Supergirl (Volume 2)
  • Superman (Volume 1)
  • Superman Family (Volume 1)
  • Superman's Girl Friend, Lois Lane (Volume 1)
  • Superman's Pal, Jimmy Olsen (Volume 1)
  • World's Finest (Volume 1)