K'hym J'onzz was a young Green Martian born centuries ago on the planet Ma'aleca'andra (Mars). She is the only daughter of J'onn J'onzz and his wife, M'yri'iah. She was killed along with her mother in the plague that destroyed most of the Martian population. [1]

Though K'hym J'onzz is dead, J'onn and his family shared in the Martian rite of G'amal'khul, the exchange of self between loved ones. Centuries later, this aspect of self left behind in J'onn's psyche still persists. [2]



  • Vulnerability to Fire: Martians are much more vulnerable to fire than the average Earth human. At times this has been portrayed as physical, psychological, or a combination of the two. The effect of this is to strip any Martian of their powers as they involuntarily lose control of their body.
  • As many Martian names bear phonetic similarities to Anglican Earth names, K'hym's name is likely pronounced "Kim", albeit with a distinctive dialect.



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