Jill Kore (Patreon)
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If you're not familiar with her, she's a scientist, vice-president of the former NCon labs. She was Hotwire's mentor before, during a scientific expedition, she and her collegues Lionel Walko and Demetrius (her younger brother) ended up on Luna. Captured by the Artisan, the trio were used as guinea pig for some of his experiments. The Artisan put a special attention to Jill for reasons yet unknown. The Artisan believed that Jill possesses a nature similar to Tessa's. She became - against her will - the main agent of the Artisan. Even if Tessa tried her best to save her, her link with the Artisan proved to be too strong.
Jill possesses a genius-level intellect, super strength (she's 25% weaker than Tessa as in #26-27), super speed (as fast as Tessa), the ability to teleport (but not as good and precise as the Spectral Wayfarer, King Scarab, and Blind Sparrow), plus the knowledge of the Artisan (but this depends on how the Artisan is willing to share).
Before disappearing, she was married with Lester Crow and had two sons.
She's eye asymetry and was near-sighted before meeting the Artisan.