Character concepts I've come up with and originally posted in an earlier post, but moved here to be noticeable. All meant to be Isolde path, potentially outdated.
Faulheit
An Academy dropout turned mercenary, Faulheit is noted to be generally lackadaisical in nature. Coming from a Noble family that came upon economic hard times and being enlisted into the Academy in the same class as Isolde, he quickly learned that even with all that one can do in one's situation, things are out of his control. Far from taking a fatalistic viewpoint on matters, he instead drifted along in life, trying to enjoy things as much as he could. He never did pass, though he did eventually decide, partly at Katarine's behest, to take up a job as a mercenary. Eventually, he was hired on a job for the Empire itself and ended up, in a twist, working under Isolde.
Faulheit has a severe disregard for authority, and tends to do the bare minimum of work possible. In the end, he typically does what he feels like, and doesn't care too much what others think, holding a general refusal to do anything that goes against his own interests. Despite the discrepancy in their performance, he befriended Isolde in the Academy anyway. He's generally unreliable, but otherwise likeable.
Faulheit himself uses a heavy crossbow for a weapon, in addition to his Dissonance ability--having an affinity for wind. Fundamentally a long-ranged combatant, he prefers to stay out of melee at all costs, though some question whether that's due to lack of ability, or sheer laziness. He has more potential than he shows more often than not. He just doesn't care for actually using it that often.
Selena
A high-ranking Dissonance Corps officer, she was the daughter of an influential noble. Selena was sent into the Academy at an early age, despite showing low Dissonance potential to begin with. It was there she eventually met Isolde, and the two became close friends, even with a friendly one-sided rivalry with her--while Isolde had high natural talent, Selena did not. As such, she worked hard just to try to keep up, and this ultimately ended with her graduating not far under her 'rival'. She eventually entered into the military, and with her developed Dissonance powers, she quickly caught notice of higher-ups as she rose through the ranks. Her friendship with Isolde ended for the worse, however, in the battle of XXXX--her eldest brother, a regular soldier in the army, was killed under her command with many others. She grew resentful and hateful of her, and while her father was sated by the supposed 'execution' of Isolde for her mistake, she had a few doubts of her own as to whether that was really true...
Selena can generally be described as having 'hair-trigger emotions', with particularly nasty mood swings depending on the situation and subject. Mention of her dead brother or Isolde will tend to sour her mood pretty quickly in general. She has not gotten over her brother's death, notably, and appears as if she won't. As opposed to Isolde's commanding style, Selena tends to be a bit more hot-headed and aggressive, insisting on a forceful attack. At the same time, however, she is adamantly against sacrificing soldiers for the sake of obtaining victory--a bit perfectionistic in that regard.
This has not escaped her personal combat style. Utilizing a rapier for her melee weapon as taught in her childhood, her Dissonance use is her real means of combat. With Light-affinity Dissonance, she utilizes varied light-based attacks to her advantage, burning and cutting through targets with focused beams all the same. However, in her case, she is unfortunate that she requires a heavy amount of concentration to utilize her Dissonance. She possesses a rare Dissonance amplifier, the [Fabularis Sigil, name subject to change]. However, she wouldn't dare use it lightly; while the amplifier does give her a massive power boost, it's also extremely dangerous; prolonged usage would most certainly kill the practitioner through Dissonance overexposure and Disquieting.
(Selena would ideally be an antagonist on Isolde's subplot. Possibly a recruitable one later--be it around the end of Isolde's branch or at the final dungeon pending on events. And yes, she's supposed to be the daughter of the same noble Isolde royally pissed off. She's just royally pissed off for rather obvious reasons)
Gier
Gier is another Dissonance Corps officer, and a noted sadist in combat and hedonist off the battlefield. Susceptible to getting too caught up in his pursuit of a good time, be it in a fight or out. Growing up in a fairly lawless area, he clawed his way to the top prior to his forced induction into the academy and Dissonance corps, by the means of his Dissonance use and following a simple rule; "Power is authority." Due to dissention, he barely passed his academy education, but managed to become inducted into the military, becoming weary of being unable to fight. His nature, significant power, and seeming inability to be killed earned him the fear of the rebel Guardians, and while his conduct is noted to be particularly unbecoming of an officer, he had gotten favorable enough results on the field that he wasn't expelled.
Gier feels that, given his ability, he has no reason not to do whatever he wants with those weaker than him--anyone who objects, in his mind, had better have the power to back it up. He looks down upon Resonance and especially the magically-dead as anything from playthings to mere annoyances, depending on his mood. Furthermore, he has a notable tendency to intimidate and threaten underlings who question his own choices. It usually takes the presence of a superior officer and sometimes a viable threat from his own side in order for him to follow orders, but is kept around due to the results he gets on the battlefield. He is notably known to take liberties with prisoners and victims that are better left unmentioned. Jarringly, despite his twisted personality, he has a beautiful, effeminate (read:bishounen) appearance.
Gier's dissonance expertise is for [type, thinking earth or metal], and he's noted for being a rare Dissonance practitioner who regularly wears heavy armor in combat. His combat style is forceful, but decidedly lacking in grace and somewhat clumsy, compensated for by his notable ability to take punishment in combat. (Haven't decided on a weapon he'd use, imagining he'd use something particularly heavy)
(Yeah, he's clearly meant to be a villain of sorts--though having it made clear that it's definitely more him. Possibly a plot catalyst of sorts, but not a major player)