- Script
- Gerry Conway
- Pencils
- John Buscema
- Inks
- Mike Esposito
- Colors
- George Roussos
- Letters
- John Costanza
- Feature Logo
- Genre
- fantasy-supernatural; superhero
- Characters
- Thor; Hercules; Destroyer; Krista; Don Blake; Professor Clement Holmes (introduction); Otto; Doctor Lois Reddy
- Reprints
First appearance of Professor Clement Holmes.
Pages 1-9
- Script
- Roy Thomas
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Colors
- ?
- Letters
- Artie Simek
- First Line of Dialogue or Text
- The scene: the fantastic Danger Room in X-Men HQ...
- Genre
- superhero
- Characters
- X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Beast; Angel; Iceman]; GUESTS: Zelda; Vera; VILLAINS: Count Nefaria; Maggia; Eel [Leopold Stryke]; Porcupine; Unicorn; Scarecrow; Plant Man
- Synopsis
- Trying once again to take a vacation, the X-Men are individually drawn to Central Park where they encounter phantom versions of themselves. One by one, they fall to five super powered villains. The X-Men are brought to Count Nefaria's fortress and he tries to convince them to join his plot to steal Washington D.C. and hold it for ransom.
- Reprints
Pages 1-10