So this is Tyran S Keller.
-Personality-
Being left to fend for himself as a child he had closed his mind off to the outside world as a coping mechanism, because of this he has a very innocent and simplistic childlike view of the world. This causes him to act very much on impulse seeks pleasure and fun over all other things, the violence that has surrounded much of his younger life has also caused him to believe such things to be normal and therefore will attack and even kill while taking extreme pleasure in doing so while remaining devoid of guilt as he truly doesn’t see any moral problems with the action. This is supported by his childish black and white view of the world; he only will attack people he sees as ‘bad’.

-physical traits’
He has traits that derive from both his werewolf and demonic bloodline.
Werewolf-
Enhanced sight (night vision, detection of movement), smell, hearing
Enhanced strength
Enhanced toughness
Rapid healing
Perfect immunity to disease, illness, toxins, poisons, pathogens etc
Resistance to magic
Ability to change into a werewolf which further increases his werewolf traits

Demonic-
Enhanced strength
Enhanced toughness
Resistance to demonic powers (customised by Kringe so that other demons powers have little effect on Tyran, this is with the exception of herself and Trikk)
Healing (as with other demons, so long as the brain is connected to the spine then the organism can fully heal from any amount of trauma. This is a result of the special stem cells demons possess which are able to rapidly replicate and reproduce as well as the ability to change into any other cell within the body, so long as the brain is able to trigger the stem cells to activate the body will always heal, if the organism is incapable to coming back to life (an object is through the heart, underwater etc) then the body will go into hibernation until able to.)
Needs to feed on life-force as does all demons but is able to gain nutrients through normal foods as well. (Demons can eat normal foods but gain no nutrients from them (but can still appreciate the taste)

When Tyran first come into contact with a demon (Trikk) his demonic powers were activated, as was his markings (the tattoos). These markings are various demonic runes that Kringe had crafted onto Tyran which grant him certain abilities.
Arm-summon Trikk
Chest-the ability to translate energy to his claws
Leg- alerts Tyran of demon activity
Eye-detects others powers

When Tyran is under a stressor (scared, anger, fight or flight, arousal etc) then his markings, claws, eyes and tongue glow (the tongue was simply because Kringe thought it would be funny =/ )
(This will be long)
-Back story-
Many years ago a great war between demons broke out (demons are not related to anything to hell or any other evilness, instead they are just supernatural beings on a different plane) which caused chaos and mayhem throughout their worlds (the demon world doesn’t really care much for the laws of physics). Kringe was a greater demon that grew to power during this war and leads her armies to forge an empire which become the first real place of order within the havoc that had engulfed the lands. While this empire still stands strong and the war has settled, she fears that the peace will not last and they will be forced into war yet again.

The demons have many powers that are as various and unpredictable as the demon landscape itself, these can vary from psychic powers to the ability to shape shift or control the clouds. As demons age their powers grow stronger (demons are for the most part immortal, while they can ‘die’ they can only do so from physical trauma and they will never die from old age, the older a demon is the more powerful it is.) once powerful enough it becomes possible to shift between dimensions and therefore can enter our universe. Demons feed on life-force which is made up of living organic matter (blood, flesh, fruit etc) and there are few better and tasty types of this life-force as other demons (the demonic powers add to the nutrients so the more powerful the demon the higher concentrate of life-force) and because of this once you are powerful enough to shift dimensions there is little need (or want) to do so as you are strong enough to do basically whatever you want and eat who ever you like. This is why demons coming over to the human world is so uncommon. In fact the only ones that did come to our world were those who were born with the ability.

But, during the Great War even the most powerful demons weren’t safe and sought refuge on other dimensions. Kringe hated this, she had an almost obsessive fascination with mortal species (such as humans) and felt compelled to protect them, during the war she sent assassins over to earth to hunt and destroy demons that had tried to hide there.

One of Kringe’s powers was the creation and manipulation of species, after the war she had decided to craft a creature that would defend Earth from all threats (both demons and man), this creature was Tyran, a fusion between werewolves that inhabited the world already with her own royal blood and a few other demonic powers to make him the perfect demon killer)

She then planted the seed that would later become Tyran into (who she though would be worthy parents). When Tyran was 12 years old both of his parents were killed in a gang related death and for the next 4 years Tyran stalked the streets, homeless and alone, until Trikk found him. She was Kringe’s champion warrior and was vital to their success during the war, and had been ordered to find and teach Tyran once he turned 16 (16 being the time when his powers were fully matured and he would be able to morph into a werewolf). From then on Trikk has taken a permanent place by Tyran’s side.