Kanjar Ro is a fictional supervillain in the DC Comics universe.
He first appeared in Justice League of America #3 (February 1961) in a story entitled "The Slave Ship of Space" and was created by Gardner Fox and Mike Sekowsky.
Kanjar Ro is the dictator of the planet Dhor in the Antares star system. Dhor is constantly at war with three other Antarean worlds: Alstair ruled by the plant-like Queen Hyathis, Mosteel ruled by the metal-skinned Kromm, and Llarr ruled by the lizard-like Emperor Sayyar. In his first appearance, he enslaved the Justice League with his Gamma Gong, and used them to battle the other three monarchs by threatening to leave all humanity in a paralyzed state, who would only be released if all three monarchs spoke Kanjar Ro's name at the same time. The League was able to defeat all three monarchs, and also defeated him, despite him taking away the monarch's voices with his energi-rod, the League had recorded their voices so humanity was freed, before imprisoning all four monarchs on a small planet which Green Lantern created a power ring barrier around.
Kanjar is a traditionally nomadic ethnic group found in North India and Pakistan. The community is also known by the names of Nath, Marwari Kumar, and Banchra.
The word kanjar has been derived from the Sanskrit kanana-chara, which means wanderer in the jungle. They claim to have originated in Rajasthan. The Kanjar then had to flee to the jungles to avoid Mughal persecution. Since that period, they have been living in the jungle, and make their living by hunting. According to their traditions, they are descended from a Manu Guru and his wife Nathiya Kanjarin. They are divided into four clans, the Callad, Superala, Diyal and Rachhband. A fifth group, the Patharkat are now a distinct sub-group, no longer inter-marrying with the other Kanjar groupings.
A section of the Kanjar of the Punjab have converted to Islam. This community is historically associated with prostitution. The Muslim Kanjar of Punjab might have had nucleus in the Kanjar tribe, but the community has always accepted fresh recruits. Those who have followed the profession for generations are called deradars, and look down upon the latter recruits. The Kanjar also supplied the executioners during the period of Mughal and Sikh rule in the Punjab.