Jack

"Wake me up as soon as anyone is able to kill me."

Jack is one of the worst criminals in history and was sentenced to 2,000 years in prison. He is on the black list with Doji, Misto and Patty. Anyone who tried to kill him was killed instead, so his path was soaked in blood. Cities were immediately evacuated as soon as he came to town and everyone avoided him. However, Jack is one day disappeared, even dead, but is called by Father Wolf back on the scene. Together with Mist and Doji, he was assigned to fight Akim.

Appearance
Jack is a man with a very muscular build with greyish skin, dark purple eyes, and his hair is very extended and gray in color. He carries crosses below his eyes, and some couple more across the upper part of his chest and two larger ones each on his shoulders. His torso is shirtless and he wears freestyle torned pants with a stripped waste sash on his waist which covers part of his pants.

Personality
Jack is a bloodthirsty and aggressive criminal who loves fighting and killing others for his entertainment. Even so, he was too strong for anyone to defeat, and he eventually got bored. Thus, he is often searching for someone who could kill him.

Despite the fact that Evil Jack kills everyone with his Berserker Lurk, he is terrified of his power and finds it terrible not to be in control.

Plot
Jack is one of the worst criminals in history and was sentenced to 2,000 years in prison. He is on the black list with Doji, Misto and Patty. Anyone who tried to kill him was killed instead, so his path was soaked in blood. Cities were immediately evacuated as soon as he came to town and everyone avoided him. However, Jack is one day disappeared, even dead, but is called by Father Wolf back on the scene. Together with Mist and Doji, he was assigned to fight Akim.

Powers & Abilities
Jack is indeed a strong demon, in possession of superhuman strength, speed and durability and possibly because of his hostile nature. He was far too strong for his opponents and ended up killing every single one.
 *  Berserker Lurk : Jack's special ability is the Berserker Lurk. The kanji characters mean as much as "self-defense instinct". This is activated automatically when Jack is cornered to his limit and makes him invulnerable to magical attacks by also augmenting his strength. However, he becomes unstoppable, far more aggressive and kills both enemies and friends. Upon activation, the crosses in his body open into eyes.
 *  Berserker Lurk: Consciousness : In the final battle, Jack finally managed to control his Berserker Lurk state, and thus retain his consciousness without going on killing everyone in sight and only his enemies. While in that state, his hair spikes up and spike-shaped marks appear above his eyes.