| KRA | CHRONOLOGY |
| Created by Jack Kirby and Wally Wood |
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CHRONOLOGY
Kra first appeared in Challengers of the Unknown Vol. 1 #8/2 (June-July 1959): "The Prisoners of Robot Planet".
Below is the definitive list of appearances of Kra in chronological order. Flashback sequences or story entries will be followed by a [Flashback] note. Stories that for some reason are no longer part of current continuity will have a comment saying this in a note following the entry.
Follow the links for a complete index of the issue, including story and creator info as well as full character chronology and in some cases story synopses.
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To go to the Kra biography click here.
Kra Chronology
| Click to list by alphabetically by title |
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| Challengers of the Unknown Vol. 1 #8/2 (June-July 1959): "The Prisoners of Robot Planet" |
| Challengers of the Unknown Vol. 1 #42 (February-March 1965): "The League of Challenger-Haters" |
| Challengers of the Unknown Vol. 1 #45 (August-September 1965): "The Queen of the Challenger-Haters" |
| Challengers of the Unknown Vol. 1 #48 (February-March 1966): "Twilight of the Challengers" |
| Doom Patrol Vol. 1 #102 (March 1966): "8 Against Eternity" |
| Challengers of the Unknown Vol. 1 #55 (April-May 1967): "Taps for Red" |
| Challengers of the Unknown Vol. 1 #58 (October-November 1967): "Live Till Tomorrow" |
| Challengers of the Unknown Vol. 1 #61/2 (April-May 1968): "The Chall Without a Memory" |
| Challengers of the Unknown Vol. 1 #60 (February-March 1968): "The Thing That Could Not Die" [Flashback] |
| Justice League of America Vol. 2 #42 (April 2010): "Team History" |
| Super-Team Family #10 (April-May 1977): "Multi-Man Rules the World" |