Zenny Greylark was a female human who existed in the High Republic Era. Born to Senator Rina Greylark and Republic Defense Coalition operative Trystian Greylark, she belonged to the Greylark family. Zenny Greylark, attempting to locate her sister Lexi Greylark, secretly boarded the Innovator, a Galactic Republic starship used for research, during a mission to the planet Mynos III that was being led by Jedi Padawan Ram Jomaram. When the Innovator's team detected a distress signal originating from the planet Palagosal, Greylark volunteered to join a search party to Palagosal that consisted of members of the Jedi Order, specifically Jedi Master Ada-Li Carro, Jedi Initiates Kildo, Tep Tep, and Jamil Sollis, and Ensign Welga of the RDC.
Zenny Greylark's first appearance was in the junior novel The High Republic: Beware the Nameless, a 2024 publication authored by Zoraida Córdova. The writer verified that Greylark was a descendant of the character Axel Greylark.