What is Jeigan?
1.
In the Fire Emblem game series, a character that often steals exp. from other characters. A Jeigan character often comes promoted on the first few chapters, and is used by players as a shield.
Jeigans are overrated by Fire Emblem
Some of them, however, like Fire Emblem 4's Cuan can be quite useful sometimes.
Marcus is a Jeigan character.