In Fire Emblem: Genealogy of the Holy War, little is mentioned about the Deadlords, but they are all fought in the Final Chapter near Barhara and eventually defeated, including Bovis himself.
In Fire Emblem: Thracia 776, Bovis is fought in the Final Chapter. The character who becomes Bovis is Galzus, if he is either dead or not recruited.
With the skills Pursuit, Critical, and Charge, it is highly recommended to either attack Bovis at a range, or with a character with Awareness. The player could also try dividing the Deadlords up into separate groups, so as to determine which characters are best for facing each individual warlord. The Forseti user should be used to defeat Bovis with little effort.
Caution should be exercised when facing off against Bovis. He possesses both the Moonlight Sword and Shooting Star Sword skills, which make him a force to be reckoned with. It is thus recommended to reposition certain units to engage Bovis at a range in order to fell him. Alternatively, a Sleep Staff may be utilized against him for a slightly easier fight.
Zwei, Bovis' Japanese name, is a German number, which, in this case, means 'two'.
In the English version, the Deadlords' names are based off the Latin names of the animals of the Chinese Zodiac. "Bovis" means "ox", the second animal of the Chinese Zodiac.