Commodore Ian Knapp / Admiral Ian Knapp / Captain Ian Knapp / Captain Ian Quincy Knapp / Cpt. Ian Knapp / Cpt. John Knapp (50 episodes, 2000-2007)
Counselor Myra Elbrey / Background Performer / Ambassador O'Faur / Borg Drone / O'Faur / Scobie / Son'a Ambassador / Tsen Kethi (50 episodes, 2000-2007)
Dr. Henglaar / Background Performer / Background voices / Baggins / Lightoller / Santa Q (49 episodes, 2000-2007)
Captain Elizabeth Shelby / Commander Elizabeth Shelby (45 episodes, 2000-2007)
Lt. Cmd. Robin Lefler / Lt. Cmdr. Robin Lefler / Cmd. Robin Lefler / Cdr. Robin Lefler (45 episodes, 2000-2007)
Commander Tolian Naros / Captain Tolian Naros / Cdr. Tolian Naros / Chief Melik / Dominion Founder (37 episodes, 2001-2007)
Ensign Ro Nevin / Cardassian Ambassador (36 episodes, 2000-2004)
Lt. JG. Corey Aster / Lt. Cmd. Aster / Background Performer / Lt. Corey Aster / Ensign Corey Aster / Ensign Aster / Lt. Cdr. Corey Aster (34 episodes, 2001-2007)
Ensign Andrew Barrett / Lt. Andrew Barrett / Lt. J.G. Andrew Barrett / Tsen Kethi Ambassador (32 episodes, 2000-2007)
Lt. Matt McCabe / Background Performer / Chief Okul / Lt. J.G. Matt McCabe (32 episodes, 2001-2007)
Admiral Nechayev / Adm. Alynna Nechayev / Adm. Nechayev / Admiral Alynna Nechayev / Captain Ziminski / Son'a Ambassador (30 episodes, 2000-2007)
Ensign Jorian Zen / Background Performer / Lt. Jorian Zen / Ensign Zen / Crewman Jorian Zen (25 episodes, 2003-2007)
Ensign Jenna McFarland / Ensign Jenna Mc Farland (24 episodes, 2000-2003)
Commodore Cole / Background Performer / Bartender / Cardassian Legate / Fleet Captain Cole / Adm. Jennifer Cole / Background voices / Biggs / Bridge Officer / Computer (23 episodes, 2000-2007)
Lt. Luko / Peter Poindexter (18 episodes, 2001-2003)
Ensign Brad Rawlins / Ensign Brad T. Rawlins (16 episodes, 2000-2002)
DiFalco / Di'Falco / Background Performer / Damon Brok / Di Falco / Ferengi / Grey Soldier / Lt. Cmd. Dave Mason (16 episodes, 2001-2007)
Cmd. Joseph Johns / Background Performer / Captain Joseph Johns / Cmdr. Joseph Johns / Commander Joseph Johns / Cmdr. Galassini (15 episodes, 2000-2007)
Lt. Ro Nevin / Lt. JG. Ro Nevin (14 episodes, 2005-2007)
Siroc / Dr. Qu'Qul / Cdr. Qu'Qul (14 episodes, 2003-2007)
Betras / McFarland / Cdr. Jenna McFarland / Glin Betras / Glinn Betras / Lt. Jenna McFarland / President Vindenpawl / Vindenpawl (13 episodes, 2003-2007)
Lt. Cmd. James Darwin / Cmdr. James Darwin / Commander James Darwin / Cmd. James Darwin / Cpt. James Darwin / Darwin / Ensign James Darwin / Lt. Cmdr. James Darwin (12 episodes, 2001-2007)
Artim / Ensign Artim Ibanya / Thalek / Crewman Thalek (11 episodes, 2001-2007)
Princess Illiana / Illiana / Counselor Moss (11 episodes, 2001-2007)
Ensign Wozniak / Background Performer / Lt. Alex Wozniak (11 episodes, 2003-2007)
Vorina / Dr. Anderson / Alien Ambassador / Doctor Anderson / Eiram / Serilla (10 episodes, 2001-2004)
Lt. S'Tal / Ensign S'Tal / S'Tal / Lt. J.G. S'Tal / Lt. S'tal (10 episodes, 2003-2007)
Lt. John Martinez / Borg Drone / Cmd. William Martinez / Lt. William Martinez (9 episodes, 2000-2005)
Vorina (9 episodes, 2005-2007)
Background Performer / Ensign Mark Abney / Chief Enan Kiril / Ensign Abney / Lt. Mark Abney (9 episodes, 2000-2006)
Lt. Toby Witczak / Tsen Kethi Ambassador (8 episodes, 2000-2001)
Lt. Cmd. Jason Munoz / Background Performer / Grey / Lt. Jason Munoz / Lt. Munoz / Wedding Background Performer (8 episodes, 2000-2007)
Background Performer / Senator (8 episodes, 2001-2006)
Background Performer (8 episodes, 2004-2007)
Mason / Ensign Capell / Background Performer / Cardassian Ambassador / Wedding Background Performer (8 episodes, 2001-2007)
Background Performer / Maintenance Worker (8 episodes, 2005-2007)
Ensign Amelia Hanley / Background Performer / Nurse Hanley (7 episodes, 2000-2003)
Pelas (7 episodes, 2006-2007)
Traya Knapp / Traya (7 episodes, 2006-2007)
Cmdr. Faisal / Background Performer / DS12 evacuation voice (welsh) / Faisal / Lt. Cmd. Faisal / Lt. Cmdr. Faisal (7 episodes, 2005-2007)
Background Performer / Lt. Thompson (7 episodes, 2005-2007)
Rayvan (6 episodes, 2000-2001)
Surgant / Lt. Milo Surgant / Lt. Pergium / Milo Surgant (6 episodes, 2005-2006)
Background Performer / Crewman Takahashi (6 episodes, 2001-2004)
Captain Nej'ta / Jakep / Nej'ta (6 episodes, 2005-2007)
Background Performer (6 episodes, 2005-2007)
Background Performer / Thug (6 episodes, 2006-2007)
Background Performer / Kaz / Governor Adams (5 episodes, 2001-2003)
Traya (5 episodes, 2001-2002)
Dr. Tesla Mor / Bartender (5 episodes, 2005-2007)
Lt. Biederman / Background Performer / Bitterman / Lt. Bitterman (5 episodes, 2003-2006)
General Korg / Wedding Background Performer (5 episodes, 2005-2007)
Background Performer / Cindy Davis (5 episodes, 2003-2006)
Silan (5 episodes, 2006-2007)
Background Performer / Brig Ensign (5 episodes, 2005-2007)
Background Performer / DS12 evacuation voice (english) / Ensign Stan Lepinski / Gul Durnitt / Operations Ensign / Ops Ensign / Wedding Background Performer (5 episodes, 2006-2007)
Gul Malek / Background Performer / Cardassian voice / Wedding Background Performer (5 episodes, 2002-2007)
Aris (4 episodes, 2001-2002)
Lt. Cmd. Robin Lefler (4 episodes, 2000)
Sha'Kev / Cdr. William Martinez / Donnell (4 episodes, 2001-2007)
Background Performer / Dr. Mistral / Gul Desset / Scobie (4 episodes, 2001-2004)
Chief Teb (4 episodes, 2001-2003)
Yeshva / Ethereal (4 episodes, 2005-2007)
Background Performer (4 episodes, 2005-2006)
Background Performer / Andorian Captain (4 episodes, 2003-2007)
Commodore Terry (3 episodes, 2001-2002)
Background Performer / Captain Roberts (3 episodes, 2003)
Captain Kira Nerys / Computer / Dr. Mariah Vox / Ethereal (3 episodes, 2005-2006)
Cmdr. Sou / Cdr. Sou (3 episodes, 2004-2007)
Background Performer / Marshall (3 episodes, 2003)
Background Performer (3 episodes, 2004-2005)
Aris (3 episodes, 2005-2007)
Background Performer (3 episodes, 2001-2002)
Klingon General / Orion Guard 2 (3 episodes, 2005-2007)
Background Performer / Algalor (3 episodes, 2005-2006)
Klingon Officer / Background Performer / DS12 evacuation voice (german) / Transporter Chief / Vedek Ro Dakhurven (3 episodes, 2006-2007)
Background Performer (3 episodes, 2005-2007)
Background Performer (3 episodes, 2006-2007)
Background Performer / Klingon Transporter Officer / Wedding Background Performer (3 episodes, 2005-2007)
Captain Jillson / Selegna (2 episodes, 2000-2006)
Lt. Brandon Birkmeyer / Wesley Crusher (2 episodes, 2001-2002)
Andorian Admiral / Lt. Paul Brickey (2 episodes, 2000-2001)
Grey Soldier / Silan (2 episodes, 2003-2004)
Gul Malek / Vedek Ro Danar (2 episodes, 2003)
Son'a Dealer / Tsen Kethi (2 episodes, 2001-2003)
Background Performer / Guard (2 episodes, 2004)
Traya / Traya Knapp (2 episodes, 2005)
Falo (2 episodes, 2003-2006)
Wise Master (2 episodes, 2004-2005)
Traya (2 episodes, 2005-2006)
Cmdr. Uerrhrvek / Commander Uerrhrvek (2 episodes, 2005)
Surgant (2 episodes, 2006-2007)
Ambassador Gev / Background Performer (2 episodes, 2002-2003)
Tara Abis (2 episodes, 2005)
Gul Malek (2 episodes, 2005)
Admiral Rand (2 episodes, 2006-2007)
Background Performer (2 episodes, 2006-2007)
Background Performer (2 episodes, 2005-2007)
Background Performer / Wedding Background Performer (2 episodes, 2005-2007)
Captain Hikaru Sulu (1 episode, 2001)
Hanar (1 episode, 2003)
Capt. Mackenzie Calhoun (1 episode, 2005)
Whiteknight (1 episode, 2001)
Capt. J. T. Edwards (1 episode, 2001)
Cassius Dao (1 episode, 2004)
Col. Mira Sulvan (1 episode, 2004)
Injured Crewman (1 episode, 2001)
Lt. Keran Azhan (1 episode, 2004)
Chief Ruman (1 episode, 2004)
Laura (1 episode, 2004)
Ensign Sutac (1 episode, 2002)
Ensign Marla Durkos (1 episode, 2002)
Minister Rozhan (1 episode, 2003)
Mars Approach Control (1 episode, 2004)
Lt. Cmd. Rodriguez (1 episode, 2000)
Security Officer (1 episode, 2001)
Lt. Tenenbaum (1 episode, 2001)
Q (1 episode, 2002)
Crewman Deadow (1 episode, 2004)
Lt. Maya Tonkin (1 episode, 2005)
Nurse Carder (1 episode, 2001)
Admiral Viek (1 episode, 2002)
Simpson (1 episode, 2003)
Dr. Merideth Abney (1 episode, 2005)
Pelas (1 episode, 2005)
Silan (1 episode, 2006)
Gul Nikar (1 episode, 2006)
Trill Lieutenant (1 episode, 2006)
Artim's Father (1 episode, 2001)
Stringwell (1 episode, 2003)
Lt. Doa (1 episode, 2004)
Centurion (1 episode, 2005)
Grey (1 episode, 2000)
Background Performer (1 episode, 2001)
Delivery Boy (1 episode, 2002)
Captain Pamela Hardin (1 episode, 2003)
Ensign Terna (1 episode, 2005)
Breen (1 episode, 2004)
Captain Kan'aj (1 episode, 2005)
Captain Zaar (1 episode, 2005)
Background Performer (1 episode, 2003)
Cmd. Benjamin Nostrom (1 episode, 2005)
Background Performer (1 episode, 2002)
T'Roth (1 episode, 2005)
Orion Guard 1 (1 episode, 2005)
Admissions Officer (1 episode, 2005)
Commander Rek'lar (1 episode, 2005)
Cardassian Officer (1 episode, 2006)
Background Performer (1 episode, 2006)
Roy Davis (1 episode, 2006)
Background Performer (1 episode, 2004)
Announcer / Ethereal (1 episode, 2005)
Background Performer (1 episode, 2005)
Klingon Crewman (1 episode, 2005)
Trill Lieutenant (1 episode, 2007)
Starbase Ops (1 episode, 2007)
Background Performer (1 episode, 2007)
Security Officer (1 episode, 2007)
Thug (1 episode, 2006)
Lt. Keran Azhan (1 episode, 2007)
Background Performer / Wedding Background Performer (1 episode, 2007)
Wedding Background Performer (1 episode, 2007)
Lieutenant Dais (unknown episodes)
Centurian (unknown episodes)
Yeoman #2 (unknown episodes)
James T. Kirk (unknown episodes)