Illumi Kosaka

Illumi Kosaka is a Keyblade Wielder before and during the Keyblade War. He is one of the best friends of Mako Hikari.

Appearance
Illumi is a tall and muscular teenager with pale skin, green eyes and silver long hair. He wears a blue blazer with a white shirt and black pants.

Personality
Illumi is abrasive and not very approachable. He rarely shows emotion, giving a cold impression to others. His manner of speaking tends to be blunt and insulting, his comments are frequently coarse or otherwise inappropriate, and he is not above provoking or belittling those who oppose or irritate him. His sense of humor tends toward the vulgar, insulting, and dark. All of this makes him unsettling to a great number of people.

Physical Abilities
Illumi is very physically fit, but once he obtained the keyblade his phyiscal attributes increased drastically. During a fight with a Large Body heartless Illumi stopped its slam in it's tracks by catching it before it hit the ground. He also stopped the giant Ground-shaker Heartless from stepping on him by holding up the foot. During his fight with Mako, Illumi was able to hit a boulder with his Keyblade so hard that it collided with the shield and broke through it's defenses.

Illumi can dash from one place to the next in a matter of moments, with flowmotion he can dash and dart around the area at incredible speeds and he is able to glide at incredible speeds. With almost all of his slashes he leaves a lens flare effect. His reaction time is amazing, he was able to deflect all of Leopardis' attacks.

Illumi's stamina in amazing as he battled against 4 Keyblade wielders during the Keyblade War and defeated all of them all by himself, and afterwards he only showed slight fatigue and was battling again within a matter of seconds.

Keyblade Wielding
When Illumi was born, his mother let him touch her Keyblade, thus doing the right of succession.

Keyblade Transformation
Through his journey, Illumi learned many different Keyblade transformations.

Hyper Cannon: Illumi can transorm his Keyblade into a cannon that can fire huge energy orbs that explode on impact.

Fighting Style
Illumi attacks with a fast one-handed style with his Darker Than Dark keyblade. Killua attacks very quickly in combat, and is just as able with his weapons as Mako is with his. Illumi's base style is mild, fast and powerful, often letting him take control of the battle. But when it calls for it, his fighting style turns into an aggressive one.

Elemental Abilities
Electricity Manipulation

Illumi can manipulate electricity, and is a master of it. With electricity he can shape and manipulate electricity, a form of energy resulting from the existence of charged particles (such as electrons or protons) which give the user control over electric fields, electric charges, electric currents, and electromagnetism. He can create/generate/increase, absorb, conduct, shape and manipulate electricity of various intensities. Charge objects with electricity, heat them and/or making them conduct electricity. Increase the sharpness of objects by using electricity to create vibrations. Electricity Solidification, electrical Constructs, including weapons, walls, armor or allies/servants and can infuse his sword with electricity.

Darkness Manipulation

Illumi is also a master at manipulating darkness. With Darkness he can shape and manipulate darkness and shadows. By itself, darkness is mostly used to cloud everything into total darkness, but by accessing a dimension of dark energy it can be channeled to a variety of effects, both as an absence of light and a solid substance, create and dispel shields and areas of total darkness, create constructs and weapons. He can Create/generate/increase, absorb, shape and manipulate darkness/shadow for various effects, sizes, shapes and intensity levels. Solidification via controlling darkness/shadow: Animating/manipulate darkness/shadow, whether users own or cast by anything else. Tentacles/tendrils, chains and/or threads to attack or bind. Umbrakinetic Constructs, including weapons, walls, armor or allies/servants, he can also infuse darkness into his sword. He also has a dark form where his eyes iris's turn black, his fur and skin turn a greyish color and his strength increases exponentially.

Black Lightning

Illumi can also combine his darkness and electricity to make his own original ability, Black Lightning. He is able to create and control a dark mystical form of electricity, which, due to it's mystic nature and properties, ignores the limitations and weaknesses of normal lightning. Black lightning not only discharges energy, it shocks and destroys many things it touches, including regular lightning. While he can wield it much like its regular counterpart, he can also use its mystical power for wide variety of attack and effects. However he refrains from using it because it is difficult to control.

Magic
Illumi is also able to utilize magic in multiple and almost unlimited forms of Magic. He can summon fire, call down thunder, freeze his enemies, protect himself and reflect all attacks, can manipulate gravity, and can stop and slow down time just to name a few, he can also add these with his physical attacks, and even combine multiple magic attacks.