- Script
- Stan Lee
- Pencils
- Jack Kirby
- Inks
- Paul Reinman
- Colors
- ?
- Letters
- Artie Simek
- Editing
- Stan Lee (original editor)
- Genre
- superhero
- Characters
- X-Men [Cyclops; Angel; Marvel Girl; Beast; Iceman]; Professor X; The Blob (introduction, villain)
- Synopsis
- Professor X detects a new mutant and sends the X-Men to investigate. They arrive at a carnival and encounter the Blob, a very fat sideshow attraction who can bounce bullets off of his malleable hide as well as anchor himself to the earth and become immovable. The X-Men bring him back to the mansion as a potential member but the Blob spurns their invitation and returns to the carnival. Realizing that the Blob knows their secret, the X-Men lure him back to the mansion where Xavier wipes his memory.
- Reprints
- Script
- Roy Thomas
- Pencils
- Werner Roth
- Inks
- Herb Trimpe
- Colors
- ?
- Letters
- Al Kurzrok
- Editing
- Stan Lee (original editor)
- Genre
- superhero
- Characters
- Jack O'Diamonds (villain); Scott Summers; Professor X
- Reprints
Origin of Cyclops concludes.