DRAMATIS PERSONAE
Exalt Lucina I of Ylisse
The Exalt, or reigning monarch, of the Halidom of Ylisse. Lucina was the leader of the human resistance against the Fell Dragon Grima in his mad consumption of the living. When all hope was lost, Lucina traveled back in time
initially to prevent her aunt's assassination, which led to the summoning of Grima. Although the assassination attempt was subverted, it only merely delayed the summoning of Grima (And Emmeryn's death) after his cultists manipulated politics to keep Ylisse in a constant state of war as they built up his forces. During this time of conflict, Lucina grew close with Chrom's tactican and advisor, Robin, and eventually married her after a battlefield confession of love. Their relationship would grow strained as Robin's true identity was revealed, but would reconcile after Grima was slain in the present by Robin's hands. Afterwards, Lucina wished to travel back to her own timeline to defeat Grima in the future. However, instead, a square of thunder brought the Halidom onto a strange island on a new world, seperated from the Outrealm Gates that lets them travel between worlds and time.
Her father, Chrom, would eventually abdicate shortly thereafter, beliving his determined survivor of a daughter would be a better fit to lead Ylisse again in these troubled times.
Lucina upon gazing on the brand new world after being thrown into the square of thunder
Grand Tactican of the Armies Robin
A mysterious amnesiac found by Chrom on the road, Robin quickly proved her mettle as a fast and brilliant thinker on the battlefield. While assisting (and some even saying becoming the de facto leader of) the Shepherds, then-Prince Chrom's personal paramilitary force, Robin drilled the ragtag misfits into the greatest fighting force the world has ever seen. Her troops were known for their ability to minimalize casualties, while overwhelming the enemy with precise and brutal strikes onto areas of oppritunity to break lines. Unfortunately, it was soon revealed that Robin was in fact the blood descendant of Grima, and was intended to be his vessel for his rebirth. In a tense stand off, Lucina almost killed her in an attempt to prevent the dragon's resurrection. However, Robin was able to overcome her fate, and was in fact the one to strike down the Fell Dragon in an act of self-sacerfice (all infomation at the time implied that Grima's death would lead to her own). However, Robin survived, once again found lying on a country road. Only this time, with her memories intact
Crown Prince Chrom of Ylisse
As Ylisse is an absolute cognatic realm, being the second born child, even if the first son, meant that Chrom was unlikely to ever take control of the realm for himself. Especially when his sister Emmeryn took the throne at the age of ten. Therefore, while Emmeryn took control of the reigns of the state, Chrom instead decided to help the people through more direct action. Creating a paramilitary force known as the Shepherds, Chrom protected the commonfolk of Ylisse from constant raids from bandits and tribals to the north. Chrom was strong with the blade and a father to his men; he seemed almost naturally born to be a battlefield commander. However, when Emmeryn sacerficed herself while childless to save her family's life, the title of Exalt passed from Emmeryn to Chrom
Immediately, Chrom had to deal with a war with Plegia. And then after that, Valm. And then a second war with Plegia. The constant fighting took a toll on the Captain of the Shepherds, as he was thrusted into a position he had no real preparation to be in. Hitting bandits until they went away was nothing like dealing with a full blown war. Not to mention, seeing an adult version of his infant daughter, warning him of a world ending threat that he had to deal with. Even when all was said and done, and peace returned to Ylisse... Chrom had no idea how to rule. He was a soldier, not an Exalt. Even before the square of thunder, Chrom intended to abdicate in favor of his (adult) daughter, but the warping of Ylisse solidified it. Now he could return back to what he was best at: helping the people directly.
Voice of the Divine Dragon Tiki of Naga
Tiki is a manakete, a dragon who has sealed her true nature in a magical crystal known as a Dragonstone, and assumed human form. Specifically, she is a Divine Dragon, the most powerful and holy tribe of dragons: the direct children of the goddess Naga herself. Tiki is deceptively much older than she appears, being at least 2000 years old, and possibly much older than that. She was alive and concious turning the time where Marth fought to eradicate the rogue Earth Dragons that threatened humanity, and even helped participate in his wars. She eventually traveled to the continent of Valentina, where she went into a state of pernament sluber
Tiki was awoken by Robin and Lucina during their pre-emptive invasion of Valm, as she held one of the gemstones of the Fire Emblem. Tiki mistook Lucina as being Marth himself, although would later accept her as almost a reincarnation of him by the end of their struggles against Grima. Her presence in the Valm Resistance and the Shepherds was a major morale boon, as she was considered a prophet for Naga. After Grima's death, she moved back to Archanea, where she took control of the Church of Naga, the state religion of Ylisse.
Knight-Captain of the Royal Guard Cordelia
Cordelia was a member of the Ylissian Royal Guard, a unit of soldiers trained to fight on pegasi. Cordelia was noted as a youth to be a natural prodigy in all aspects related to pegasi, and she was the rising star within the royal guard. When their previous commander, Phila, was killed in action trying to rescue Emmeryn, Cordelia was promoted to the new commander of the Royal Guard.
Cordelia had a massive, obvious crush on Chrom, but he was completely oblivious to her advances and passed her over to another peagsus knight, Sumia. Cordelia attempted to take it in stride, but it was still a massive punch in the gut for her, and she never got over it. How this affects her relationship with Lucina is unknown, but she doesn't seem to take it out on her personally.
General Exchequer Anna
Anna comes from a prolific clan of matriarchial merchants that is said to have existed on all continents in the world that Ylisse once inhabited in. Anna was saved from certain death by the Shepherds, as they intervened to protect her from bandits. Afterwards, she joined the Shepherds, where she became invaluable not only for her skill with the blade, but for her nearly bottomless vault of gold that helped fund the Shepherds during their various campaigns. In return, Anna claimed she saw limitless potential for her to make even more money off of looted goods and other services. She remained with her circle of friends after Grima was defeated, and was first entrusted with the treasury by Chrom, and later renewed with the same position by Lucina. There, she was horrified to realize just how little money Ylisse actually had, and how the state barely kept itself solvent. Perhaps, at least, the square of thunder might give her a new chance to make Ylisse, and herself, rich.
Knight-Captain of the Ylissian Army Frederick
A veteran of the first Plegian-Ylissian War (and some say the greatest knight of Ylisse in the conflict), he was assigned by Chrom's father to be his son's retainer, a position he followed even once the Exalt passed away. When Chrom went to form the Shepherds, Frederick was his Lieutenant, usually acting as the voice of reason to the more hotheaded and idealistic Chrom. Although his role of giving sage battlefield advice was largely overtaken by Robin once she was recruited into the Shepherds, Frederick still remained a trusted confidant to both Chrom and Robin, and offered a unique perspective that both lacked due to their age (and amnesia in the case of Robin).
After the slaying of Grima and the initial dissolution of the Shepherds, Frederick went on to be appointed the commander of the entire Ylissian Army. His commitments to the new position prevents him from joining Chrom as he reformed the Shepherds after abdicating, and instead now serving under Lucina in the same capacity he once did with her father.