Updated. [@DocTachyon]

So I've redone the history and thought I'd just give the answers to the questions you've asked.
1. His armor is a little stronger then steel.
2. When not in his armor he is of average human strength. When his armor is on his strength is doubled.
3. His magical attacks are of average power. For example he has an attack called shadowball(which is basically like a fireball but made of shadow) and he can't really make it bigger then a watermelon.

[hider=App]
Name: Blake Conwall
Nickname/Alias: Diablo
Age: 24
Gender: Male
Appearance: Gleaming yellow eyes can be seen beneath the curly brown hair of this tan Caucasian. He stands at 6 feet evenly and his body is lightly toned with not a lot of muscle mass. He weighs around 160lbs. His expression at most times is charming but that is not to say he is a nice person, while his face is chiseled with no facial hair growing whatsoever. Blake wears torn up clothing over his clean body and wears no shoes upon his feet.

Location: Recently, hes managed to find himself wandering in the giant Redwoods, Post-California.

Settlement:  Blake is a drifter by nature, choosing to not stay in one place for long.

Profession: Before the apocalypse Blake was studying to become a veterinarian. 
 
Skills: Animal-Medicine, Cooking, projectile weaponry, fighting

Powers: Blake has the ability to transform into an armored knight. This armor has a demonic visage with medium plating fully encompassing him with no body parts being shown. Etched into the armor are ruins that give off a ominous yellow glow. The helmet has two yellow glowing eyes with a sly, toothy grin for a mouth while two horns protruding from either side of his head, wrap down to almost touch his neck. His physical and mental abilities are enhanced while in this form, while it also sports magic based attacks that come from his gauntlets, which are also a form of a melee attack. The magic itself is shadow based which means he is able to manipulate shadows for multiple uses.  

Weaknesses: Fully body Sunlight stops him from using his magical powers and also nullifies his ability to transform. From past experience anytime he tries it doesn't work, while if he happens to be in his armor he will come under excruciating pain as the armor turns to ash, which he then won't be able to use for up to 2 hours. Shade allows him to regain his magical abilities and his transformation but only on a small scale compared to the night sky. The armor itself can stand a good bit of blows, but will eventually start to break apart if under too much stress.

Weapons: He has a small dagger hidden in his sleeve and he also carries a 22 glock hidden behind his back. Most of his weapons reside with his armor and powers.

Armor/Clothing: Torn clothing, his Diablo form.

Equipment and Supplies: He wears a small backpack filled with essentials for a drifter. Food, water, ammo and some medicine as well as a picture of home and family.

Personality: Blake is a hard worker, usually trying his hardest when preforming tasks, at least when he cares. Rarely does he laugh or smile anymore but when he does it can be infectious. Hes mostly cool but Blake can be arrogant as well as rash at times when he believes in something. Hes the type of person that would help any animal in an instance but not so much a human. While in his Diablo form his mood darkens into a brooding figure who does not care what others think.

History: Blake was ordinary before the apocalypse with nothing extraordinary about him that he could think of, other then the fact that he liked nature and helping animals. It was a quiet day, not even the birds were out chirping which they barely did anymore. The air was thick in his parents house, which he had fled to after the invasion began. He was sitting on the couch surrounded by his family, including the one he was to marry. She sat next to him so closely that if he listened hard enough he could hear her heart. They held hands as they listened to the static of the radio, which was illuminated by candlelight in that small room. They waited for something to change, anything knew to satisfy their minds so that they knew everything would be okay, but that never happened. It was subtle at first, a cough here and there which became  worse in a short time period until his loved ones where on the ground withering in agony. Blake could only watch as he held his fiancee close to his chest. Her breathing becoming more erratic as her life drifted from her eyes, which a single tear fell. He looked around teary eyed, wondering what had just happened as his family lay dead around him. Overcome with grief he grew so angry and a hatred grew in him of all things alien.
 It started slowly at first, the tingling sensation that wrapped around his body blinding his vision. He felt sick but could not move and when the sensation finally ended the blindness passed but what he saw was alien. His vision was enhanced and as he looked at his hands they were not his own but some monsters! He got up and ran from the room, faster then ever before and as he pushed the door to enter the bathroom it exploded off its hinges from the mere touch. He looked in the mirror then and realized that the monster was him and he could only wonder why as he punched the glass shattering it. Diablo had been born.
That was around a year ago and since then Blake has learned about his powers, using them to survive in a world which was now quiet. His family was dead and so was the life that he knew. There was only one thing to do and that was wander around the country with no direction in mind. As he walked the landscape the old Blake died and a new one was born, one who knew of hardship and loss. The only thing he felt anymore was empty and a burning sensation deep down that drove him forward. Seldom has he made human contact but on the occasions that he does two outcomes appear. One where he walks away with what he needs and two being the same as the first but with dead bodies in his wake. His latest trek has had him travel to the Redwood forest of California, what he hopes to find there, not even he knows.

Other: Enjoys the presence of animals more then humans.
[/hider]