What could potentially be Beyond Birthday on the cover of the novel with Naomi.
Origins: Death Note
Alias/aka: Rue Ryuzaki, B, B.B.
Classification: Human with shinigami eyes, "Un-private" detective
Threat level: Cub+
Powers and abilities: Psychometry (Able to see a person's name and life span by looking at their face).
Physical strength: High human
Attack potency/Destructive capacity: Street level
Durability: High human
Speed: High human
Intelligence: Genius, likely the third smartest human in the series under L and Light, manipulated Naomi for much of the novel.
Stamina: Above average.
Range: Melee.
Weaknesses: None notable.
Standard equipment: None notable.