| Issue | #81 |
| Published | March 1980 |
| Cover Price | 0.40 USD |
| Pages | 36 |
| Editing | Al Milgrom; Mary Jo Duffy (assitant editor) |
| Characters | Defenders [Hulk [Bruce Banner]; Sub-Mariner [Prince Namor]; Dr. Strange [Stephen Strange]]; Aeroika |
| Genre | superhero |
| Pencils | Rich Buckler (signed) |
| Inks | Al Milgrom (signed) |
| Colors | George Roussos |
| Letters | Dan Crespi ? |
| Notes | Cover colorist credit provided 2007 by Al Milgrom. |
| Reprinted | In Essential Defenders (Marvel, 2005 series) #4 |
| Characters | Defenders [Hulk [Bruce Banner]; Dr. Strange [Stephen Strange]; Sub-Mariner [Prince Namor]; Hellcat [Patsy Walker]; Valkyrie; Nighthawk [Kyle Richmond]]; Wasp [Janet van Dyne]; Yellowjacket [Hank Pym]; Aeroika; Noog; Ruth; Amber; Dian; Xhoohx; Ytitnedion |
| Synopsis | Kyle Richmond arrested for Contempt of Court & Interstate flight to avoid Prosecution. In Tunnel-World, the Hulk is captured by Ytitnedion. |
| Genre | superhero |
| Script | Ed Hannigan |
| Pencils | Herb Trimpe (breakdowns); Jack Abel (finished art) |
| Inks | Jack Abel |
| Colors | Ben Sean |
| Letters | Joe Rosen |
| Reprinted | In Essential Defenders (Marvel, 2005 series) #4 |
| Letters | typeset |
| Notes | Letters from Derek McCulloch, Roy Veldboom and Scott Anderson with the Statement of Ownership. This sequence appears between pages 12 and 13 of the previous sequence. |
| Characters | Iron Man; Battleaxe |
| Synopsis | Ad for Hostess Fruit Pies. |
| Genre | superhero |
| Notes | This sequence appears between pages 16 and 17 of sequence #1. |
| Characters | Batroc |
| Synopsis | Ad for Crazy magazine. |
| Genre | superhero |