Kaross

 Kaross  is one of Clyde's Pawn, and the spirit residing in the original Longinus, Lernaean Ignition.

Appearance
In his human form, Kaross has the appearance of a young child (around 5 to 7), with messy, snow-white hair and purple eyes.

In his true form, Kaross has the appearance of a colossal, greyish-silver hydra with six-heads.

Personality
Despite his appearance, Kaross is a curious and observant child, and is highly loyal to Clyde, calling him "Master" or even "Dad", and constantly tries to help him in any way he can.

Powers & Abilities
Demonic Power: As a Devil, Kaross has all the common skills and powers of one.

Immense Strength: In his hydra form, Kaross possesses an immense amount of power.

Promotion: As a Pawn, Kaross can use promotion to temporarily gain the traits of a Queen, Rook, Knight or Bishop.

Transformation: Regulus has the ability to transform to a small child, around the age of Mavis.

Flight: Being a Devil, Kaross can use his wings to fly.

Trivia

 * Kaross' name is derived from the Pokémon Milotic ((Japanese: ミロカロス, Milokaross).
 * Kaross is a fan of Oppai Dragon.
 * Kaross likes caramel chocolate.