Tristan

Tristan ​is a playable character from Fire Emblem: Genealogy of the Holy War. He is the substitute character of Diarmuid if Lachesis was not paired up. He is the brother of Jeanne.

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Tristan's father was Eve, one of the Agustrian knights assigned to protect Lachesis. Both he and Jeanne were eventually taken in by Sigurd's army. However, the two of them were separated some time later. Tristan was raised in Isaach along with Seliph and the younger initial members of the Liberation Army, while Jeanne was adopted by a traveling merchant, who took her to Leonster. After Jeanne's adoptive father was murdered by the Grannvale Empire, she was raised in hiding by Finn alongside Leif. Tristan and Jeanne are finally reunited in Chapter 7 and they vow never to be separated again.