Weight (Japanese: 重量 weight), abbreviated as Wt, is a statistic applied to units which appears only in Fire Emblem: Path of Radiance and Radiant Dawn. As its name obviously suggests, it simulates the unit's body weight and dictates whether or not a unit is light enough or too heavy to be rescued by another unit, and whether or not one unit is able to shove another. The function of the weight stat is similar to that of the constitution stat, and indeed it performs the same functions filled by constitution in other games, even though constitution still exists in Path of Radiance and Radiant Dawn.
Technically speaking, weight is not entirely its own stat but is calculated based on the unit's constitution and class. Every class in the two games adds a class bonus to the unit's constitution stat to produce their weight stat. The class bonus simulates any additions to the unit's actual body weight that come from whether or not they are armored or ride a mount. A side effect of this system is that increasing a unit's constitution using a Statue Frag will also indirectly increase their weight.
Path of Radiance
|Path of Radiance||If ([Unit A's Wt] - [Unit B's Wt]) ≥ 2, then Unit A can rescue Unit B.||--|
|Radiant Dawn||If ([Unit A's Wt] - 2) ≥ [Unit B's Wt]), then Unit A can rescue Unit B.||--|
Weight only affects shoving in Path of Radiance; in Radiant Dawn, constitution is used instead.
|Path of Radiance||If ([Unit B's Wt] - [Unit A's Wt]) ≥ 2, then Unit A can rescue Unit B.||--|