Devil King's Daughter
The Devil King's Daughter in KonoSuba is an unnamed child of the Devil King holding a General's seat in his army, reputedly attractive, dear to her father, and otherwise a closed record.
Even the enemy high command has a family tree. The Devil King's Daughter is exactly what the title says: a child of the Devil King himself, unnamed in every account, who nonetheless holds one of the Generals' seats in her father's army. That combination alone makes her unusual, since the other seats belong to monsters with long individual legends, while she stands in the record as a closed door: reputed to be very attractive, said to be dear to her doting father, and otherwise undescribed. She is a General whose face, powers, and story the public record simply does not show.
How far into KonoSuba have you read?
Set your place and this page rewrites itself to exactly that point. Nothing ahead of you will show.