The crew of the Enterprise
Captain Chen Hwai
- The Atoner: To some extent; his grandfather was ashamed at working on nuclear weapons for the Eastern Coalition that killed millions in World War III and dedicated the rest of his life to working on peaceful projects like the warp five engine. Although Hwai doesn't feel personal guilt for his grandfather's actions, he does consider his work to be a continuation of that atonement.
- Beijing: His home town.
- Critical Annoyance: Is normally highly disciplined and calm, but blows in "Mission to Tellar". Fortunately, this is exactly what's needed to make the argumentative Tellarites respect him.
- The Idealist: Captain Hwai eventually becomes this, becoming a strong believer in interstellar unity, though his idealism is often tried.
- Reasonable Authority Figure
- Verbal Tic: "Ai ya" (a Chinese expression of mild annoyance and disappointment like 'bah' or 'dammit').
- Character Development: Her opinion of humans improves over the course of the series.
- Fish out of Water
- Ms. Fanservice: Defied compared to the canon Star Trek: Enterprise, with her wearing traditional Vulcan robes rather than a catsuit.
- Name's the Same: As the canon figure, but quite different in character.
- The Spock: Of course.
Lieutenant Audrey Rocia, Chief Engineer
- Disco Dan/Fan of the Past: Likes twentieth and twenty-first century music, which her fellow crewmembers consider something between dreadfully old-fashioned and just dreadful.
- New Orleans: Where she comes from.
- Verbal Tic: Ending sentences with 'amigo'.
- Wrench Wench
- The Xenophile: Lived on Vulcan for a while and knows more about Vulcan culture than most of the other human crew.
Lieutenant Amrit Rajwal, Communications
Dr Pierre Besson, Medical Officer
- Actual Pacifist
- Cheese-Eating Surrender Monkeys: Subverted when it turns out he has very good personal reasons for his pacifist beliefs.
- Humans Are Bastards: Tends to believe this, and it usually takes considerable proof before he concedes that Aliens Are Bastards too.
- Vitriolic Best Buds: With McLeod later in the series.
Lieutenant Nicholas McLeod, Chief of Security
- Badass Boast: "COME AND HAVE A GO IF YOU THINK YOU'RE HARD ENOUGH!"
- Character Development: He gets more open-minded about aliens as the series goes on, his early experience of them mostly having been with arrogant Vulcan ambassadors on Earth or unpleasant criminals he fought.
- London Town
- Violence Really Is the Answer
- Vitriolic Best Buds: With Besson, later on.
Lieutenant Travis Mayweather, Helmsman
- Ace Pilot: Was formerly a fighter pilot with the United Earth Air Force.
- Name's the Same: As the canon character, but has a rather different backstory.
Ensign Clement "Clem" Satterthwaite, Shuttle Pilot
- Ensemble Darkhorse: Seems to have developed quite a fan following.
- Oop North: He's from North Yorkshire.
- Recurring Character: Not a member of the regular cast, but a frequent guest.
- The Unintelligible: Not entirely. As written, he can be understood, assuming you understand thick North Yorkshire dialects. If you don't, he's this trope. Often treated like this in-universe by the crew (partly jokingly, though).
- Verbal Tic: "...tha knows".
Ahmed Al-Hamdani, Nurse
- Cultural Posturing: Likes to remind people of the Arab world's contributions to astronomy (he himself is Qatari).
Other UESPA officers and other humans
Director Forrester, Director of the United Earth Space Probe Agency (UESPA)
- Big Good
- Name's the Same: Not quite, but clearly a reference to Admiral Maxwell Forest from the canon Star Trek: Enterprise.
- Reasonable Authority Figure
Captain Paul Stiles of the Daedalus
- Legacy Character: Inverted - he is the ancestor of the Lieutenant Stiles from the Star Trek: The Original Series episode "Balance of Terror", who mentioned in that episode that several of his relatives had served (and some had died) in the Romulan War.
- You Killed My Father: More like You Killed My Sister, after his sister Amanda Stiles dies in battle with the Romulans. A Foregone Conclusion given the aforementioned bit of canon.
Captain Abner Bowman of the Dauntless
- Big Damn Heroes: Gets to play this role more than once.
- I Coulda Been a Contender: Initially has this attitude to the Hwai and the Enterprise crew over them getting all the glory in their exploration missions and the follow-ups made by ships like the Dauntless being far less well known.
- Jerk with a Heart of Gold
- Shout-Out: He's an exaggerated version of Jonathan Archer from the canon show.
Captain Shran of Andoria
- Name's the Same: As a popular character in the canon show, and one of the least altered from the show.
Praetor D'Deridex of the Romulan Star Empire
- Bigger Bad: The ultimate political leader of the Romulan Empire, but not the leader of its military forces in the field.
- Named After Somebody Famous: Inverted - it's implied the D'Deridex-class warbird from Star Trek: The Next Generation is named after him.
- Military Maverick: Certainly compared to other Romulan officers, in that he actually considers his enemies to be intelligent beings (albeit barbarians) rather than animalistic. He is also willing to be 'creative' with orders from above when necessary, though he won't refuse a direct order from the Praetor.
- My Country, Right or Wrong: In contrast to most of the Romulans, who wouldn't even stop to consider that there could be a 'wrong'.
- Named After Somebody Famous: Inverted - it's implied that the Valdore from Star Trek: Nemesis is named after him.
- Worthy Opponent
- Complexity Addiction: Is accused of this by her internal opponents due to her fairly complex plan to neutralise the Rigel system as a threat.
- Deal with the Devil: Makes this with 'the Subcommander' and the Tal Shiar to ensure that she escapes blame for the Rigel disaster.
- False Flag Operation: Her plan to neutralise Rigel relies on this.
- Karma Houdini: Has her command reinstated, albeit with a lower profile, after the disaster of Rigel (though it wasn't entirely her fault) rather than being punished. Others wonder why this is, not knowing of her Tal Shiar connexion.
- Named After Somebody Famous: Inverted - it's implied that the IRW Haakona from the Star Trek: The Next Generation episode "Contagion" is named after her. Lampshaded when the Subcommander tells her that the Tal Shiar can ensure that she so escapes disgrace that she will have ships named after her in the future.
- We ARE Struggling Together: Hampered by internal political tensions among her subordinates, ultimately resulting in a coup when her original plan fails.
- Attack! Attack! Attack!
- Commander Contrarian: To Haakona.
- General Ripper
- Leeroy Jenkins
- Klingon Promotion: Takes Haakona's command via a mutiny, albeit not one that includes killing her.
- The Mark: But he doesn't realise it till it's too late.
- Oh Crap!: He is intelligent enough to eventually realise what a disaster his Attack! Attack! Attack! tactics - the product of his arrogant assumption that all non-Romulans are cowards who will easily be intimidated into surrender - have landed the fleet in. Too late.
- We Have Reserves
"The Subcommander" (Tomalak)
- Almighty Janitor: His titular rank is far lower than his actual importance.
- Evil Is Not Well Lit: Mostly keeps to a shadowy alcove.
- Legacy Character: Inverted - he's the ancestor of the Tomalak from Star Trek: The Next Generation.
- Manipulative Bastard: Uses Reverse Psychology to manipulate Kalvak into doing what he wants.
- Skewed Priorities: Like the rest of the Tal Shiar, he thinks throwing away a task force as part of a ploy to take down one political opponent in the middle of a war is an OK deal. Helps that, like most Romulans, he's so confident the war will be won easily that it doesn't matter.
- State Sec
- Xanatos Gambit: Even describes the trope to Haakona:Subcommander: True tactical genius, as Iím sure you know, lies in being able to twist a bad position into accomplishing an alternative goal.