Cain (Shadow Dragon and the Blade of Light)

Kain is a loyal knight of Aritia and is often seen with his fellow knight Abel. He loyally follows Marth in his quest and stays with him in the end of his quest.

When Marth left to comply on Hardin's request, Kain was left in charge of Altia. When the Empire attacked Aritia, Kain managed to escape and reunite with Marth, once again assisting his quest. In his ending, Kain continues to serve Aritia and when Jeigan died, he succeeded his position.

Kain, along with Abel, also jump started a trend of Fire Emblem characters consisting two Social Knights/Cavaliers that are often seen together as friends, one of them will specialize more on Strength and HP, and the other specializes on Skill and Speed, and their color scheme are usually red and green (in Kain's case, he wears red).