Boyd

"Aw, that's a bunch of hooey! Survival on a battlefield depends on experience and luck. Nothing more! If you dive into battle with a conceited attitude, you'll end up dead no matter what blood is in your veins!"

- Boyd to Mist in a support conversation

The middle child of his family, Boyd joined the Greil Mercenaries to support his younger brother Rolf and to fight alongside his older brother Oscar. Whereas Oscar is calm, polite, and intelligent, Boyd is reckless, brash, and at times a little dense. Through Support conversations in Path of Radiance, it is revealed that Boyd harbors a crush on Titania, oblivious to their wide age gap. He also has a friendly rivalry with Ike.

Personality
Boyd is described as having a straightforward and reckless personality and is also known to be dense at times, which his brothers and Mist commonly pick on. He doesn't care about the details or odds of a battle, merely wanting to fight. He frequently gets into arguments with his brothers but in an Info conversation in Radiant Dawn it is shown that he is very protective of them, not letting Rolf's biological mother see him.

In Path of Radiance
Boyd is the only playable unit of the Fighter/Warrior class in the game. As such, he fits the typical mold for the class: High attack and HP, poor defense and resistance. Many players like Boyd for his great strength and dodging ability as a Warrior, often considering him one of the better units of the class of the entire series. Once he promotes to Warrior, he can use bows. If Oscar was given the ability to use bows when promoted into a Paladin, He, Oscar, and Rolf can deliver a Triangle Attack, scoring a high-damage critical hit on a single enemy. In a Support conversation it is revealed he has a crush on Mist, blushing when she compliments him and leaving quickly. He also comforts her in their "A" Support conversation.

In Radiant Dawn
Boyd re-appears as a Warrior in Radiant Dawn, boasting high strength and HP but low defence and resistance. He is able to promote into a Reaver. With his levels maxed out, Boyd becomes one of the top damage dealing units available. From Info conversations it is revealed that whilst Boyd and Oscar are brothers, Rolf is only their half-brother with his mother leaving their father when he was just a baby. He is also frequently seen with Mist.

In the Epilogue it is revealed that he never stopped training so he didn't lose his spot to "some stupid rookie", which he never did. If he has an "A rank" Support with Mist, she will tease him about his insecurity.

Optional Endings
If Boyd shares an A-rank Support with Mist in Fire Emblem: Radiant Dawn, they will marry after Ashera's defeat, humoring his worries about losing his spot to "some stupid rookie". Much to Boyd's annoyance, Mist cries during their wedding vows.