Understanding Child Unit Mechanics
Child Units in Fire Emblem: Fortune's Weave are not simply weaker versions of their parents; they are distinct units with their own growth potential and unique inheritance mechanics. When a marriage occurs between two characters, their children will eventually become available for recruitment through specific Paralogue missions. The child's base stats are influenced by the average of their parents' stats at the time of recruitment, with a slight bias towards the parent who is the "primary" parent in the marriage (usually determined by who initiated the marriage or who has a higher support level).
Crucially, Child Units inherit one of their parents' classes, allowing them to access a specific set of skills and promotions. They also inherit a set of skills from both parents. The specific skills inherited are determined by a predetermined order, often taking the first skill from one parent and the second skill from the other. This means that the skills your characters possess at the time of marriage can directly impact the abilities of their offspring. Furthermore, Child Units have their own unique growth rates, which can be influenced by their inherited classes and any skills that boost experience gain or stat growth.