Leff was a crewmember aboard the USS Lexington in the mid-24th century.
Leff was a friend of Lexington chief medical officer Dr. Elizabeth Lense. During the time Lense was being held at Starbase 314 under suspicion of having been genetically enhanced, Leff was either killed or transferred off the Lexington. Lense regretted never having had the chance to say goodbye. (SCE eBook: Oaths)
| USS Lexington personnel | ||
|---|---|---|
| USS Lexington (NCC-1709) | J. Baila • Berriman • P. Coss • D.W. Davidson • Garth of Izar • Ito • T. Ivari • L. Kelso • R. Leslie • W.C. Perinal • M. Rousseau • W. Samuels • D. Sinclair • L. Sterling • C. Stuart • N. Uhura • D. Watley • R. Wesley |  
|
| USS Lexington (NCC-14427) | Declan Keogh • Manojlovich • Rosita Pérez | |
| USS Lexington (NCC-61832) | T. Allenby • H. Anderson • Antonacci • Audrey • G. Ben Zoma • Bowdren • T. Cadwallader • S. Carson • Cavanaugh • J. Cox • Eberling • Fornnel • Gaines • F. Galloway • Griscom • Halprin • Hasegawa • G. Jenson • P. Joseph • Kumagai • Leff • E. Lense • R. Mithra • Moytulix • Pridemore • Rodgers • Soriano • J. Turner • Twistekey • Man-Fai Wan • Wilhoite | |
| USS Lexington (Steamrunner-class) | A. Jago | |