His approximate appearance at the beginning of the story.

This is what he might look like when he grows up a bit.

When will he be fully grown or ???

Assimilated Bloodlines: Shinigami 1200 OD, Hollow 1200 OD, Visored ( Arrancar ) 3000 OD, Fullbringer 3500 OD, Mage 400 OD, Juvenile Beast 3500 OD, 

Skills: Book of the End 4500 OD, Fullbring (souls) 1300 OD, Bringer Light 1000 OD, Sonido 1000 OD, Garganta 500 OD, Cero 300 OD, Ring of Link 2000 OD, Authority Beast 2000 OD, Self-modification 1500 OD, Under the mask of other people's faces 1500 OD, Antichrist 1500 OD

Magic: Kido 2~800 OD

Items: Magically infused gems 5~10 OD, Regeneration drug 100 OD, Modified Cannon Kuukaku Shiba 5000 OD, World-Transcending Defense Ball 500 OD, Reiatsu Enhancement Machine 15000 OD, Protective vest of Sigmund Kronstein 10000 OD, Empty Medallion 4000 OD, Medallion: Caliburn 4500 OD, Medallion: Gram 5000 OD, Medallion: Dainslef 3500 OD, Medallion: Harp 3500 OD, Medallion: Ruler Jeanne D' arc 80000 OD, Medallion: Ruler Saint Martha 80000 OD

A detailed explanation of some abilities.

Juvenile Beast

EX rank

By fulfilling the basic requirements for the Beast class, Sigmund Kronstein falls into the category of "Evil of Humanity", that is, a being persecuted by humanity. Sigmund can be assigned to the role of Beast 2/R, however, he does not meet the additional requirements for classification as a Beast 2/R. Currently, he is only worthy of the title of Juvenile Beast. This skill reflects his true nature.

Authority of the Beast

Rank C

Being the "Evil of Humanity" by nature, Sigmund has the Authority of the Beast. All attacks become super effective against anyone who has the attribute "human", "star" or is a defender of the natural human order. Since Sigmund is still a Juvenile Beast , rank capped at "C".

Self-modification

Rank C

After realizing his True Nature, Sigmund decided to completely change himself, abandoning the last thing that connected him to humanity. This is the ability to remake one's own body or merge one's flesh with the body parts of others. The higher the rank in this Skill, the further one is from being a true hero. The more Sigmund changes his essence, the stronger this Skill will become, changing its rank.

Under the mask of other people's faces

EX rank

This skill shows the mastery of transformation that Sigmund possesses. Only a small interaction is needed to change his appearance and acquire the skills and knowledge of a person, using these skills and abilities against him with increased effect. Increases the effectiveness of all skills that Sigmund has usurped.

Antichrist

Rank C

Having killed over 10 saints, spoken out against all Christianity, and rejected religions and Common Sense in general, Sigmund acquired this skill. Any holy sacraments or other attacks that have the Purification or Holy attribute will deal less damage, while all Christians will take more damage from his attacks. Together with the Beast Authority skill at rank C, it gives the God Slayer skill at rank C.

Characteristics of Sigmund from the servant's point of view.

True name: Sigmund Kronstein

Class: Foreigner / Juvenile Beast

Characteristics

Strength: F

Endurance: E

Agility: EX

Mana : EX

Luck : F