He once kidnapped members of the Justice League of America and brought them to Kalanor where he challenged the Flash to a game of chess with his teammates' lives on the line.
- The planet Kalanor was created by writer, Gardner Fox.
- The location and inhabitants of Kalanor depend on the source. Justice League of America Vol 1 1 informs that the planet is located in another dimension; later sources establishes Kalanor in our dimension. The same issue shows Jasonar and Saranna as the main lifeform, which resembles almost humans; Despero's race is always referred as a mutant one, due nuclear wars. Justice League of America Vol 1 248 also shows sentient aliens of blue skin and hammershark-like eyes. However, Superman: Our Worlds at War Secret Files and Origins Vol 1 1 shows several Kalanorians seemed with Despero's race, and none as Jasonar and Saranna.
- Justice League of America (Volume 1) #1 (1st appearance)
- The planet Kalanor appeared in an episode of the Justice League animated television series.
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