Beginning with Secret Defenders #4, an image of eight heroes consistently appeared with the DEFENSE Lines logo on the letters page.
The choice of Wolverine made sense, as he worked as a member of the team in Secret Defenders #1-3.
Captain America and Spider-Man were among the heroes to star in #6-8.
Silver Surfer arrived in #14 and appeared again in #23-24.
Human Torch, Cable, Cyclops, and Iron Man, however, never made their way into the story pages of the 25-issue series.