Caeda is the princess of Talys, daughter of its first king Mostyn. She befriended Marth of Altea during his two-year exile to Talys in the War of Shadows, calling upon him when the Galderpirates launch an assault on the nation, and subsequently joining his forces when he departs to raise an army against the Dolhr oppression. After the war, she and Marth become engaged, and she moves to Altea to live with him and assist in the restoration of the nation. When the army of Archanea comes to conquer Altea, Marth's sister Elice convinces Caeda to flee in order to find and alert Marth as to Altea's fate, and assists him throughout the rest of the War of Heroes.
Caeda is among the strongest units in Shadow Dragon. She joins in Chapter 1 with a remarkable base Speed stat that allows her to double attack most standard enemies. As a flying unit, she stands out for her ability to cross over water and mountain peaks that your other units cannot. Her low base Strength and growth will leave her weighed down by most lances, but her 85% Speed growth will soon allow her to double attack even with heavier weapons, such as Steel Lances and Javelins. She is notable as one of the only units that will consistently double attack even on the hardest difficulty levels. Her promotion to Dracoknight is a huge improvement, giving her enormous boosts to her main statistical weaknesses, Strength and Defense, plus 2 extra Movement, in exchange for a negligible loss in Resistance. Caeda is also a good candidate for the Seraph Robe in Chapter 6 to allow her to survive an extra hit, and is very helpful alongside her promoted Defense stat.
The biggest contributor to Caeda's success is her exclusive Wing Spear, a lightweight but powerful lance that deals bonus damage to cavaliers, paladins, knights, generals, and horsemen. These unit types make up a majority of the bosses in Shadow Dragon, making Caeda one of the best boss killers available. The Wing Spear can be forged with extra Mt to improve her damage output even further, to the point where she can kill cavaliers and knights in a single hit (saving Wing Spear uses), and even the most durable generals will not survive a round of combat against her. Extra Wing Spears can be found in Chapters 8, 16, 17x, and 22, so there is no need to be extra-stingy when using it.
Caeda may struggle in the early chapters due to her low durability, the plethora of axe-wielding enemies, and the lack of enemy types that the Wing Spear is effective against. Caeda's flaws are worth putting up with; once she is able to take advantage of her strong points, she will prove to be a unit with near-unmatched versatility on any difficulty level.
Caeda visited her father in Talys before returning to Altea with Marth. Their whispers of love warmed the castle halls.
After the war, Caeda's long-awaited dream of marrying Marth was realized. Wearing a snow-white dress, she was said to have looked as beautiful as an angel.