COSMO (J'Suna)	CHRONOLOGY
Created by ? and Bob Brown

CHRONOLOGY

Cosmo first appeared in Challengers of the Unknown Vol. 1 #18 (February-March 1961).

Below is the definitive list of appearances of Cosmo 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.

The chronology list can also be sorted according to Comic book title. Please note: If you want to go back to the chronological listing after having used the sorting tool you have to reload the page.

To go to the Cosmo (J'Suna) biography click here.

Cosmo Chronology

Click to list by alphabetically by title
Challengers of the Unknown Vol. 1 #18 (February-March 1961): "The Menace of Mystery Island"
Challengers of the Unknown Vol. 1 #21/2 (August-September 1961): "The Challengers' Space-Pet Ally"
Challengers of the Unknown Vol. 1 #25/2 (April-May 1962): "Captives of the Alien Hunter"
Challengers of the Unknown Vol. 1 #32/2 (June-July 1963): "Cosmo Turns Traitor"