India, May 2 -- As the high-stakes legal battle between Elon Musk and OpenAI intensifies over the latter's pivot, a new figure has taken an unexpected center to the OpenAI legal war.

Shivon Zilis, an executive at one of Elon's companies and his partner of Indian origin, has emerged from the shadows of Silicon Valley. Zilis, the top executive at Musk's brain-chip startup, is the mother of three of his children and is increasingly being cited by OpenAI's legal team as a "human bridge" whose dual roles may prove incremental to the Musk-Altman trial's outcome.

During recent testimony, OpenAI lawyers alleged that Zilis served as more than just a confidante to Musk. They alleged that she has acted as a strategic liaison, gaining unique access...