Allegore D. Meredith

Meredith is the "Herald of Sin" and serves directly under the hellspawn's Lord of Sin.

Devil Fruit
Meredith consumed the Kemo Kemo no Mi whitch placed a large beast in her back which she can use in battle. The beast is refereed to as Kakusa when granted the name by Sekar, Lord of Sin but Meredith personally refers to it as Biggie. The creature is incredibly powerful holding similar powers to the Hoya Hoya no Mi except it has one major flaw, the power of the beast relies entirely on the users current emotional state. The size, strength, and personality of the creature fluctuate whenever Meredith's emotional state changes.

Do to Meredith's natural calm demeanor Kakusa is almost never at full strength, but when Meredith lets her emotion come lose she is the perfect user for the fruit because when she gets made she gets very very made.

Rage Force
Meredith might be mild mannered and very calm and maybe even submissive but when pushed to the brink she is known to explode with incredible power. While a competent fighter in her normal state her skill and power is increased nearly 10 fold when she unlocks her rage induced potential.

Her rage state is so powerful that it even effected Sekar which is the reason she is currently his Herald and servant.