| Issue | #54 |
| Published | December 1977 |
| Cover Price | 0.35 |
| Pages | 36 |
| Editing | Archie Goodwin |
| Notes | Letters page letter from Peter B. Gillis. |
| Characters | Defenders [Sub-Mariner [Namor]; Hulk [Bruce Banner]; Hellcat [Patsy Walker]; Nighthawk [Kyle Richmond]] |
| Genre | superhero |
| Pencils | George Perez (signed) |
| Inks | Ernie Chan (signed) |
| Notes | Letters page letter from Peter B. Gillis. |
| Reprinted | In Essential Defenders (Marvel, 2005 series) #3 |
| Characters | Defenders [Sub-Mariner [Namor]; Hulk [Bruce Banner]; Hellcat [Patsy Walker]; Nighthawk [Kyle Richmond]; The Red Guardian [Dr. Tania Belinsky]; Valkyrie]; The Presence [Sergei]; Dollar Bill; Ledge (Cameo); Penelope (Cameo); Jack Norriss |
| Synopsis | A nuclear explosion set by Sergei to give himself and the Red Guardian super powers causes the Defenders to be trapped at the bottom of the ocean and almost drown. |
| Genre | superhero |
| Script | David Kraft |
| Pencils | Mike Golden (pages 1, 6-14); Keith Giffen (pages 2-3, 15-18) |
| Inks | Bob McLeod |
| Colors | David Kraft |
| Letters | Gaspar Saladino (page one); Bruce Patterson |
| Notes | The Power Principle Part 2 |
| Reprinted | In Essential Defenders (Marvel, 2005 series) #3 |
| Characters | Nick Fury; Clay Quartermain; Fury LMD |
| Synopsis | Fury battles a group of Fury LMD's at S.H.I.E.L.D. Headquarters. |
| Genre | superhero |
| Script | Scott Edelman |
| Pencils | Juan Ortiz |
| Inks | Bruce Patterson |
| Colors | Ken Klaczak |
| Letters | Howard Bender |
| Reprinted | In Essential Defenders (Marvel, 2005 series) #3 |