Arthur Pendragon (Tuffty)

Callum O. Brien (カルム・O・ブリエン Karumu Ō Burien) is a Vice Admiral in the Royal Navy using the codename Crimson Monkey (紅猿 Kōzaru). He is the direct deputy to admiral Bonnie Jacklin and one of the navy's youngest officers. He is also the younger brother of Diana O. Brien, a member of the Ten Shogun and the Priestess of the Church of the Dragon God.

Appearance
Callum is a young man in his late teens with choppy, black, dark eyes and a pale complexion. He is quite short being smaller than a vast majority of the soldiers under his command and several inches shorter than his older sister. He wears a bright-red cardigan that is left open to reveal his bare chest. On his lower body he wears blue jean sorts with a fluffy design around the hems and a yellow sash tied around his waist.

Callum has a large x-shaped scar in the middle of his chest, it is unknown how exactly he received it.

Personality
Callum is a confident, jovial and reassured young man that is very nonchalant about life in general and takes everything in his stride. His demeanour is one of someone who believes themselves to be so obviously superior they need not say or prove anything. His infamous smile rarely leaves his face even in times of severe distress or when something surprising happens.

He serves as a...

Magic & Abilities
As a vice admiral Callum is one of the navy's strongest fighters. He has authority over all the men ranked bellow him. Sometime in the past Callum was able to go toe-to-toe with Aello one of the garrison's generals though he was ultimately defeated.

Physical Capabilities
Incredible Strength:

Amazing Speed:

Excellent Reflexes:

Immense Durability:

Limitless Stamina:

Supernatural Senses:

Ways of Combat
Master Hand-to-Hand Combatant:

Magical Abilities
Immense Magic Power: Callum possesses an incredible amount of raw magical power. Aello stated that Calum's magical reserves surpass his own and several of the higher-ranking members of the garrison.

Magic
Fire Dragon Slayer Magic (炎の滅竜魔法 Honō no Metsuryū Mahō): A Magic that allows Callum to transform the physiology of his body into that of a Fire Dragon's. Due to his mastery of Fire Dragon Slayer Magic, Callum is very resistant towards fire and fire-based attacks and spells.
 * Fire Dragon's Roar (火竜の咆哮 Karyū no Hōkō):
 * Fire Dragon's Crash Down (火竜の墜落 Karyū no Tsuiraku):
 * Fire Dragon's Red Sky (火竜の赤空 Karyū no Shakkū):

Modes
Fire Drive (ファイア・ドライブ Faia Doraibu):

Assorted Others
Average Intellect:

Trivia

 * The characters physical appearance is based off of Monkey D. Luffy from the "One Piece" series.