Darrell Gervasi was a Human male of a stocky build. He also had a shaved head and large biceps. Gervasi was a Lieutenant in Starfleet and served aboard the USS Defiant as a security officer.

In January 2377, he was one of several Defiant security personnel who beamed down to Harkoum to capture Taran'atar and return him to Deep Space 9. Gervasi wore the surface operations uniform and also had a backpack for the team containing supplies. Gervasi and the others exchanged phaser fire with Iliana Ghemor and her mercenaries. (DS9 novel: Warpath)

Starbase Deep Space 9 personnel and residents
Station personnel	K. Adabwe • Ahzed • Aleco V. • Alle T. • Amran • T. Ane • N. Aponte • J.S. Bashir • Battes A. • S. Bowers • Cardok • Cenn D. • Chavez • Cryan • E. Dax • J. Dax • Devro • M. Eddington • Eddon • Etana K. • Gaysd T. • Girani S. • Goodman • Gordimer • Guerette • Hage • Hava • T. Jast • Jataq'qat • S. Jonsson • Kabo • Kahrimanis • Kelly • Kira N. • Kurn • C. Ling • P. Matthias • McCormick • McEwian • K. Merimark • Monyodin • Moru • I. Muckerheide • Munson • J. Si Naran • Nedani I. • Nguyen • Nog • M.E. O'Brien • Occino • Odo • D. Parks • Pertwee • Phongsit • G. Primmin • Redac • K. Richter • Ro L. • Rom • G. Roness • Sanger • Selzner • J. Senkowski • Setrin Y. • Shul T. • B.L. Sisko • N. Sthili • M. Strang • S. Tarses • P. Tenmei • Terek • T. ch'Thane • Tolland • M. Tomson • T'Peyn • Trulli • E. Vaughn • Vu K. • Wasa G. • Wayeh S. • D. Wilkens • Worf • Woros K.
Station residents	Broik • Chram • Conpap • Elvim • Frool • Gann • E. Garak • Grehm • Grimp • Jas-qal • Kaga • Leeta • Modo • Morn • Nog • K. O'Brien • M. O'Brien • K. O'Brien • Quark • Rom • J.I. Sisko • Sorv • Taran'atar • Tora Z. • Treir • Vissh • K. Yates • Yelsi

Defiant personnel
Federation, Starfleet	USS Defiant (NCC-1764)	Tonia Barrows • Thomas Blair • Stephen Garrovick • Hamilton • Kamau Mbunga • Clarissa Nyn • Ravishankar Sabapathy • Serling • Terry Shull • Stevok • Erin Sutherland • T'Lehr • Mariah Willoughby
	USS Defiant (NX-74205) (I)	Arla Rees • Julian Bashir • Helen Blake • Bremerton • Sarita Carson • Ezri Dax • Jadzia Dax • Michael Eddington • Hector Ilario • Kelly • Kira Nerys • Kizilbash • Koletta • Meyer • Enrique Muñiz • Nog • Miles O'Brien • Odo • Reese • Paxton Reese • Krissten Richter • Benjamin Sisko • Fabian Stevens • T'Rul • Cregger Lor Mowlanish Dor Crixa Tel • Tutu • Worf, son of Mogh
	USS Defiant (NCC-75633) (II)	Julian Bashir • Boehm • Sam Bowers • John Candlewood • Jeannette Chao • Ezri Dax • Greg Forte • Darrell Gervasi • Quin Heins • Tiris Jast • Kira Nerys • Lankford • Mikaela Leishman • Aaron McCallum • Minecci • Calvin Moore • Lisa Neeley • Nog • Miles O'Brien • Odo • Tariq Rahim • Krissten Richter • Gerda Roness • Jason Senkowski • Benjamin Sisko • Nancy Sthili • Stov • Prynn Tenmei • Thirishar ch'Thane • Thron • T'rb • Elias Vaughn • Worf, son of Mogh • Amy Zucca
mirror universe	ISS Defiant (Constitution-class) Terran Empire, Starfleet	Jonathan Archer • Travis Mayweather • Phlox • Malcolm Reed • Hoshi Sato • T'Pol • Charles Tucker III
	Defiant Terran Rebellion	Leeta • Miles O'Brien • Benjamin Sisko