Appearing in "Re-enter the Mimic!"
- Puppet Master
- The Defender - (Puppet Master puppet) (Single appearance)
- Bank robbers
- Magneto (Mentioned)
- Brotherhood of Evil Mutants (Mentioned)
- Quicksilver (Pietro)
- Scarlet Witch (Wanda)
- Avengers (Mentioned)
- Fantastic Four (Only in flashback)
- Unnamed Metro College students
- Wanda Maximoff's trained falcon
- Unnamed New Yorkers
- New York
- San Rico (Mentioned)
- Unknown valley in Central Europe
- The X-Copter
- Warren Worthington III's Mustang
- Professor X's Rolls-Royce
Synopsis for "Re-enter the Mimic!"
- Synopsis not yet written.
- This issue is reprinted in many other comics and books, see references for more info.
- Jean Grey redesigns the groups costumes in this issue.
- The Puppet Master reveals that he knows Professor X is the secret leader of the X-Men.
- This issue features a letters page, Mutant Mail Box. Letters are published from James E. Guernsey, Guy H. Lillian III, Steve Frederick, Babara Chung, Joe Negovesi, Jr., Michael Pole, and Patricia Turner.
- Special Location: The Floor
- And Now, Hastily Before We Forget 'Em Amidst the Pulsatin' Pandemonium to Follow, It's Credits Time:
- Edited by Stan Lee
- Scripted by Roy Thomas
- Drawn by Werner Roth
- Inked by Dick Ayers
- Lettered by Sam Rosen
- (Wouldja Believe Artie Simek?)
- references: X-Men #19, X-Men #26, Fantastic Four #28, X-Men #4 and other Brotherhood of Evil issues, and Amazing Spider-Man Annual #3
- The Mimic is the first character to be added to the original X-Men team.
- Write your own review of this comic!
- Discuss X-Men Vol 1 27 on the forums
- Images from X-Men Vol 1 27
- This is the start of a three-part story-arc about the Mimic that continues in X-Men #28 and X-Men 29.
- X-Men #19 - first appearance of the Mimic.
- Fantastic Four #8 - first appearance of Puppet Master.