| Release: | Jun 1983 |
| Cover: | Aug 1983 |
The Man Who'll Know Too Much
| Release: | Jun 1983 |
| Cover: | Aug 1983 |
The Ultra Humanite has his sub-men capture Dr. Chuck Grayson, who transplanted a human brain into Robotman's body, in hopes of having him transfer Ultra's brain into Robotman's form. Then he destroys the carrier Normandie to demonstrate his power, and Steel hears Tarantula tell of a strange youth who claimed to be from 1983, and who called himself Brainwave, Jr.
| Writer | Roy Thomas |
| Cover Artist | Jerry Ordway |
| Penciller | Jerry Ordway |
| Inker | Mike Machlan |
| Colorist | Gene D'Angelo |
| Letterer | David Cody Weiss |
| Editor | Roy Thomas |
| Green Lantern | Alan Scott |
| Dr. Fate | Kent Nelson |
| Superman (Earth-2) | Kal-L / Clark Kent |
| Johnny Quick | Johnny Chambers |
| Batman (Earth-2) | Bruce Wayne |
| Robin (Earth-2) | Dick Grayson |
| Firebrand | Danette Reilly |
| Liberty Belle | Libby Lawrence |
| Robotman | Robert Crane |
| Commander Steel | Henry Heywood |
| Tarantula | Jonathan Law |
| Ultra-Humanite | |
| Lou Costello | |
| Bud Abbott | |
| Amazing-Man | Will Everett |
| Deathbolt | Jake Simmons |
| Gernsback | |
| Tubby Watts | |
| Cyclotron | Terrence Curtis |
| Charles Grayson (Earth-2) | |
| Rag Doll | Peter Merkel, Sr. |
| Brainwave | Henry King, Jr. |
| Clark Gable | |
| Atom | Albert 'Al' Pratt |
| Age | Modern Age |
|---|---|
| Format | Comic |
| Genre | Action | Adventure | Super-Heroes |
| No. of Pages | 32 |
| Country | USA |
| Language | English |