Nicole Zenith is the mother of Apollo Zenith. She died when Apollo was a teenager from natural causes.
Her death, coming while Apollo was still young and dependent, triggered a chain of events that would define his life: her passing led her husband Harris Zenith to abandon Apollo entirely, leaving him to survive alone on the streets of The City of Neoterra.
Nicole's absence looms large in Apollo's psychology — a mother lost too soon, whose death opened a wound that Harris's abandonment made permanent.