Jennie Lynn Hayden was the daughter of Alan Scott, the golden age Green Lantern of Earth-Two. Due to genetic mutations from her father's exposure to the emerald energies of his power battery, both she and her twin brother Todd "Obsidian" Rice gained light and dark based powers, respectively. Adopting the alias of Jade, Jennie along with Todd and other second generation heroes tried to solicit membership into the Justice Society, and when their initial application to join was rejected, they instead formed the teen team of Infinity, Inc.
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