Achievements in Ignorance: Jinto succeeds in befriending Lafiel, the 3rd in line for the Imperial throne, by asking her for her name, which no one had ever done before. The fact that members of the Royal Family all have pointy ears was such common knowledge nobody thought to inform Jinto about this little detail while he was learning to be a 'Proper Abh'. Thus when meeting Lafiel he was unaware that she was supposed to be a regal unapproachable individual, and thus spoke to her like he would anyone else.
Distressed Dude: Early on he is captured and Lafiel has to rescue him. "I'm at a loss without you around."
The Face: Deconstructed with Jinto feels about being forced into this role. Because he seems to get along with everyone (perhaps because he wasn't born into Abh society like everyone else) he has to act as a go-between both inside the Basroil's crew and with other soldiers. This means shouldering everyone's emotional baggage and translating it for one receiving the message.
Impoverished Patrician: Jinto may be a count but the only thing to his name is his position in the Star Force. He comments on this and his quarters on the ship has a sign declaring, "The tiniest noble mansion in the empire."
Averted in Banner III, when Martine is finally recaptured and (reluctantly) agrees to stay with the Empire. Jinto still doesn't get to set foot on his home planet again, as this was one of the conditions Martinians required.
Lady and Knight: Technically it would be 'Captain and Supply Officier' but Lafiel and Jinto fullfil the spirit of the trope. He takes care of and otherwise protects her, while she is a good-hearted princess with a drive to serve her empire. On other hand, since Jinto is arguably The Quisling, his fellow humans see them as the darker variety.
Mayfly-December Romance: Not so surprisingly, Jinto is the one that acknowledges this the most as Lafiel still wonders at time if she and Jinto are a different race while Jinto is ALWAYS conscience of the difference.
The Quisling: By the time Banner I opens, he's unflinchingly loyal to the Abh (by way of his loyalty to Lamhirh) and doesn't really seem to care too much about his old home anymore; this comes back to bite him in the ass later on, as his former friends consider him an example of this trope in-show.
The rest only consider his father the real traitor (He did surrender the world to the Abh and get a noble title for it), and are convinced Ghintec can be "corrected". When that doesn't happen, they're usually none too happy. At the end of the anime series, they agree to stop rebelling and stay an Abh system under the condition that he, and those who inherit his title over the system, never return.
This is also attributed to the fact that he left his homeworld at a very young age and in a very lonely way with even his fatherly figure hating him. Although in the novel, he is shown to be much more loyal to his home planet as he is shown to be emotional to every thing said or done to his home planet.
Took a Level in Badass: By Banner III, Jinto is showing that he's grown up and is fully qualified to be a feudal lord, even if his chance to do so is spiked by circumstances.
— I always want to be there for you, Lafiel, through thick and thin; through good times and bad times. I know I'll grow old faster than you because I'm a lander but to me that doesn't matter. I'll be there. If you become empress I'll be there. If we become dust in the emptiness of space I'll be there.
Lafiel Abriel (Nei Debrusc Borl Paryun)
Air Jousting: In a flashback Lafiel is shown Air Jousting in a zero G chamber when she was still attending the Abh Military Academy. She was apparently very good at it.
Badass Princess: As early as Crest of Stars; take over a space station and rescue her companion without arms or back up? No problem.
Everything's Better with Princesses: Lafiel is a princess. Her military superiors exploit this by ordering her on diplomatic missions which deny her the martial glory she craves.
Gene Hunting: Lafiel did this pre-series to find out who her mom is. Her dad told her it was Captain Lexshue.
Go-Getter Girl: Lafiel, who's dedicated to working her way up the chain of command.
Lady and Knight: Technically it would be 'Captain and Supply Officier' but Lafiel and Jinto fulfill the spirit of the trope. A good-hearted princess with a drive to serve her empire.
Mayfly-December Romance: Abh live much longer than landers, meaning that Lafiel is painfully aware that she's going to outlive Jinto. Though she still wonders at time if she and Jinto are a different race.
She Cleans Up Nicely: The impression of the crew of the Basroil, upon seeing Lafiel elegantly attired as per page image for a private dinner. She got this reaction from Jinto twice. First when she walked out and second when taking off her shawl.
Silk Hiding Steel: Polite and proper even when threatening someone. By her strength of will and cleverness, she recruited Klowal's pet-like maids into a rebellion against him. As for 'being in charge' she may be a princess but she's still has to obey her military superiors.
Tsundere: Becomes this after arriving at Sfagnof; she gives Jinto a hard time in between moments of affection and vulnerability. She says baka complete with Luminescent Blush while telling him to shut up. Being out of her comfort zone on land probably makes her irritable.
By Banner of the Stars she's taken to regularly insulting him despite the Basroil's crew acknowledging him as her 'special friend'.
Spoor Aron Sekpadao Letopanyu Peneju
Blood Knight: It's stated in one of the opening blurbs that she could have retired and lived a life of leisure but has decided to remain in the military because wars are apparently more exciting. Not that this stops her from complaining of boredom while her ship is under heavy bombardment.
The Captain: Becoming this was the sole reason Spoor joined the Star Forces, though ironically when the war finally breaks out she's been Kicked Upstairs to become an Admiral.
Insult Backfire: Admiral Spoor's chief of staff is appalled at her attitude during combat and calls her Lady of Chaos - a title which she immediately adopts.
Jerkass: Its hard to tell weather Rear Admiral Spoor is simply a jerkass or a Jerk with a Heart of Gold. In Banner of the Stars II she goes from pitying Lafiel to bullying her Chief of Staff.
Foreign Queasine: Cat is considered a delicacy on his homeworld of Midgrat. When the United Mankind sent ambassadors, they repeatedly lectured the locals on democracy and how unhealthy it was to eat cat. The Abh didn't say anything. According to him, this is why Midgrat joined the Abh Empire.
Male Gaze: Present during a conversation between Jinto, Ekuryua and him, where he's talking about his experiences as a mustang (enlisted man promoted to officer). It suggests that part of the reason he's been in the Star Forces for 20 years is because of the pretty girls in latex space suits.
The Bibauth family
Not Helping Your Case: Nereis and Nefee are part of a family known for its spectacular insanity. They claim they want to redeem their family's reputation, but they're not doing a very good job of it.
With Great Power Comes Great Insanity: The Bibauth family is famous for two things (other then being a root family): Giving birth to geniuses and giving birth to lunatics. The culture of the Empire says one cannot have the former without the latter.