Path of Radiance

Mist was born in Gallia, and spent his early years in this country with his family. During this time, he is entrusted to be the keeper of a bronze medallion by his father. Unbeknownst to him, he is the only beorc who can hold the medallion without going berserk due to the forces of Order and Chaos being unusually balanced in his heart. he often sings a lullaby taught to him by his mother to the Medallion, which, in actuality, is the Galdr of Release. After the death of his mother, Mist moves to Crimea with his remaining family members, where his father starts the Greil Mercenaries.

As the Greil Mercenaries run errands for their employers, Mist assists them by ensuring that their home fort is kept in tip-top condition, doing a wide range of household chores, such as that of cooking and cleaning. his culinary skills, however, leave a lot to be desired, as described by Ike in a support conversation he shares with Oscar.

Trouble begins to brew for the Mercenaries when news of an impending invasion by Daein reaches their ears. In order to avoid this conflict, they are forced to leave the fort and proceed to the safety of Gallia.

On the way to Gallia, Mist, alongside Rolf and Elincia, is instructed to take an alternate route from the Mercenaries to avoid the fighting. After joining up with Ike and the rest of the Mercenaries, he then accompanies them to take up temporary residence within an abandoned fortress.

Greil is later slain by the Black Knight that night, and dies away from the fort. This incident severely impacts Mist, who is unable to forgive himself for not being there by his father's side as he breathed their last.

Determined not to make the same mistake with Ike, Mist forces Rhys to teach him how to use Staves, and makes plans with Rolf to fight alongside their siblings. When the Greil Mercenaries move to enter battle again, he and Rolf force their way onto the battlefield, and succeed in convincing Ike and Boyd to allow them to fight alongside them. Mist later plays a major role in uncovering Duke Tanas' plot, and witnesses the rebirth of Serenes Forest by the Herons Reyson and Leanne.

When Ike later challenges the Black Knight in Nados Castle, Mist charges in and provides assistance to him as a healer. The pair will then flee the castle before it collapses.

Mist will then continue to stay with the army, assisting it in the defeat of Mad King Ashnard.

Radiant Dawn

Mist returns in this game when Crimea is embroiled in a civil war, where the Mercenaries take on a job to quell the rebellion, alongside saving Lucia from being executed. As the Mercenaries later joins the ranks of the Laguz Alliance, Mist will then participate in the battles that follow.

As the war rages on, Mist becomes increasingly ill as the forces of chaos residing within Lehran's Medallion become uncontrollable. In the middle of a battle with Daein, he succumbs to the Medallion's influence, whereupon he is led off the battlefield. Mist will then reveal that he could hear a voice in his head urging him to awaken the dark god with the Galdr of Release.

Mist will then join Ike's progress to the Tower of Guidance. he also warns Ike to be careful when they faces off against Zelgius, the Black Knight for the final time. After Ashera is defeated, he will return to Crimea with the Mercenaries.