- United Federation of Planets
- Klingon Empire and Vassals
- Romulans and Remans
- Bajor and Deep Space Nine Races note
- Deferi and Breen note
- The Borg and Undine
- Delta Quadrant Races
- Iconians and Servitor Races note
- Temporal Cold War Factions
See Borg and Undine
New Romulus Task Force
Dyson Joint Command
See Delta Quadrant
See Borg and Undine
See Delta Quadrant
See Iconians and Servitor Races
Terran Task Force
See Bajor Sector
Gamma Task Force
Temporal Defense Initiative
The NimbosiansPeople living on Nimbus III, having chased the Federation, the Klingons and the Romulans from the planet over 100 years ago, they're now subjugated by Hassan the Undying and the Orion Syndicate.
- Anarchy Is Chaos: The Nimbosians tossed everyone out because they represented law and order. Now, they kinda wished they hadn't...
"Law"A mysterious Romulan who aids your player during the initial stay in Nimbus III.
- Broken Ace: Was once a proud lawman, but after being betrayed by a number of people and being abandoned, he's turned into a bitter man. At least until you show up.
- Dead Man Writing: Subverted. He writes a letter to the player character when he decides to take care of a spying Gorn, fully expecting to die... only to come back and sheepishly shrug at the player when he's safe and sound. He's clearly embarrassed the player found the letter and found out he's safe.
Hassan the UndyingChief enforcer of the Orion Syndicate, he holds Nimbus III in a death grip, as well as allowing the Tal Shiar to do what they wish. He had a minor role in The Path to 2409 as Melani D'ian's right-hand man during her ascent to the top of the Syndicate.
- Screw This, I'm Outta Here!: When your player character defeats all of his gladiators and himself, he gets fed up, teleports away and sics everyone in his building on you.
- Smug Snake: Certainly this prior to breaking him. He's incredibly secure in his power and isn't afraid of making sure you and anyone else is put in their place.
- Stout Strength: He's surprisingly portly for Melani D'ian's most feared assassin.
- Villainous Breakdown: After you best him in combat, he panics and runs away. When you chase him into space, he's ranting and raving that you'll never take him and that he and the Orion Syndicate will keep Nimbus III.
The Nimbosian PiratesA group of various races that take pleasure in robbing people and have a major chip on their shoulder towards the Orion Syndicate.
- The Cavalry: In "Installation 18", they show up as soon as Hakeev and his men arrive to take you on. Hakeev takes the moment to skedaddle out of there. And then one of the items you can earn by beating the mission "Installation 18" is the Nimbus Pirate Distress Call, which brings the pirates to you. This is what happens when you save their bacon.
- It's Personal: They all hate the Orion Syndicate (or at the very least Hassan) and are willing to give you a hand if you fix up a problem they have with their ship.
The UndineFormerly Species 8472, the Undine have become a massive force to be reckoned with thanks to the Iconians screwing around.
- Fireball Eyeballs: Following the Season 9 revamp, some Undine now display this when employing psionic abilities. Undine!Cooper briefly gets these as well when Tuvok figures out the Undine's plans in "Surface Tension".
- Implacable Man: They're immune to Borg Assimilation. Then the Borg find a way to do so... then you stop them from learning how.
- No-Sell: When you face the Undine in the second mission, your measly Miranda-class cruiser/TOS Constitution-class cruiser/NX-01 can do jack squat and you have to survive until The Cavalry arrives.
- Spanner in the Works:
- They screw around with all sides. The Klingons are not happy with it at all and they're not happy that the Federation don't realize this.
- They end up as their own Spanner in the Works when their attack on Tuvok and subsequent attacks on Earth and Qo'noS unite the Federation and the Klingon Empire.
- Storming the Castle: The Undine invade Earth Spacedock as a diversionary tactic to invade Qo'nos.
- Unwitting Pawn: They believe the Alpha Quadrant powers broke their peace agreement with Captain Janeway, which is why they resumed their invasion of the Milky Way. Truth is, they were duped by an Iconian False Flag Operation.
Lieutenant Natasha Yar
- Played by Denise Crosby
- Apocalyptic Log: In "Survivor", the player character discovers that Tasha didn't actually die in Romulan captivity, but lived for many more years in an abandoned Tal Shiar prison. The datapads you pick up and recharge tell the story of the remains of the Enterprise-C crew's last days as they died from old age, wildlife and temporal anomalies caused by the "Temporal Ambassador" version of Admiral T'Nae. She is the last person to die, requesting to T'Nae to tell the story of the Enterprise crew and to tell Sela that she loves her.
- Art Evolution: Tasha's design changed with Delta Rising, making her look more like Denise Crosby today. It doesn't look that great, and in "Temporal Ambassador" doesn't match very well with the character's objective age in that mission.
- Back for the Dead: Again...
- Bus Crash/Child by Rape/Made a Slave/Sex Slave: Yeah, her attempt to have a meaningful death? Doesn't go as planned. As those familiar with Star Trek: The Next Generation should know, the Enterprise-C is captured by a Romulan general, who forces Tasha to become his mistress in exchange for everyone else's lives, fathers Sela on her, then has her shot when she tries to escape with her daughter. "Survivor" reveals that that last little bit was actually not true...
- Death Seeker: With the stipulation that she wants her death to mean something: she knows she's meant to be dead in the original timeline, the sticking point is how. It doesn't work out, as seen in the Bus Crash example.
- Doomed by Canon: Anyone familiar with her story from TNG knows her hope to die in a meaningful way is
- Never My Fault: No, I did not say I was handling the security protocols and no, Tholians don't know Stafleet Regulations.
- Running Gag: Her appearance is one. Why can't she stay dead!?
- Timey-Wimey Ball
QSadly, not the Q we all know and love. This one's his son and he's just as annoying as his pappy.
- Baleful Polymorph: Invokes this on you if you ask him if he really is that powerful.
- Pet the Dog: Despite all the war and strife, Q takes the time to get everyone together for an amazing winter wonderland adventure.
- Throw the Dog a Bone: He does this in "State of Q" by teleporting two Borg Cubes away... after he's made you fight these things over and over.
- What the Hell, Hero?: When he invokes Baleful Polymorph on you and you talk to him again, you revert by saying "Really, Q?" "State of Q" has the mission objective "Tell Q to get on with it."
MadranA Ferengi businessman who the player encounters in search of the Tal Shiar. He later works for the Romulan Republic
- Bad Boss: He works the Romulans he hires to pay off their debts to the bone and, as is a Ferengi's hat, prefers the pursuit of wealth than anything else.
- Screw This, I'm Outta Here!: When you bust his second operation on New Romulus, he runs off in a panic, escaping. Though also he claims the Tal Shiar were blackmailing him by holding his family (read: latinum) hostage.
- This Is Gonna Suck: "Oh, it's you again..."
- What the Hell, Hero?: When you encounter him on New Romulus, he's not too happy you trashed his mining operation. Granted, it was more Hakeev's fault.