Sample Post: make sure your tense matches up most of the time. I made the first sentence two sentences because you went from 'was a calm night' to "area is at" and went from past tense to present tense too quickly.

It was a calm night in Blüdhaven. The overall crime in the area was at a record low. The faint sound of late night drivers and riders accented the cold air and added to the beautifully chaotic ambience that was Blüdhaven. This tranquil symphony of urban sounds was pieced quickly by a ear curdling scream.

Mike ran down the alleyway as he was chased by a finely dressed white-clad man on a pure white horse.

"Please, leave me alone!" Mike called in between heavy breathes as the white clad Gentleman began to get closer and closer.

The one advantage Mike had on the fiend was all the twists and turns in the alleyway but that luck ran out as the alley ended with a packed parking lot with not a single living soul in sight. Mike looked frantically around for somewhere new to duck into but in his search he failed to watch where he was stepping and tripped over a median.

"Now thou'll feel the cold touch of thy's ghostly steel!" The apparent ghost called out as he drew a rapier from his side and leaped from his steed at Mike. Mike prepared for the worst but was instead greeted by a loud 'thwack' noise which was followed up by the sight of his assailant strewn out in front of him, rubbing his jaw.

Mike prepared to get up and run again but he quickly lost consciousness before getting the chance to get away...

...and now Harry was in control.

"You know you could have had a pretty good career as a stage actor Haddock." Harry said as he walked over to the villian's discarded rapier while he was stunned "but you just had to go to a life of crime"

Harry in Mike's body slipped his foot under the sword hilt and kicked it up, grabbing it and pointing it at the now recovered Haddock.

"Who are you?" Haddock said as he stumbled backwards in a vain attempt to escape.

"Harry. But you can call me Giest." and with that Giest leapt into action.

Name - Arthur McGavin

Alias - Speed Demon

Age - 17

Sponsor - Zatanna

Personality - Determined, Stoic, Cool

Experience - A year

Powers - Arthur is a master of anything with wheels or an engine. Through magic and skill he is able to deduce how most vehicles work in minutes and drive them with unrivalled skill in no more than an hour. Speed Demon also possesses the perk/curse of having a demon bonded to him which gives him access to vast reserves of magic and an annoying voice in his head. Arthur, on his own, is capable of summoning an infernal sword, firing Eldrich blasts and having any vehicle he rides befit a Knight of Hell. The demon, known as L'Iegos, has quite a few powers of his own such as his demonic armour, hellfire breath, Lance of the forsaken (an incredibly strong lance capable of being summoned in the blink of an eye), super strength, summonable fireballs and magic platforms Along with the same vehicle shaping power as Arthur.

Weaknesses - L'Iegos is very durable but iron and holy weapons will burn his skin should it come into contact and he is incapable of entering or being summoned in holy sites. Arthur has all the strengths an weaknesses that come with being human.

Appearance - Arthur is built like a lamp post; tall, skinny and strong enough to stop most things thrown his way. He has tanned skin and short raven black hair.

BRIEF Bio - Arthur was raised in your average american household with two parents that he tends to avoid talking about if he can help it. He always had a fascination with cars and dreamed of becoming a car designer when he grew up but that passion faded away when he hit his teens and actually began driving. Arthur gained a dimmer outlook on the world and began street racing for thrills and pink slips. He became so good at his trade in only a year of (legal) driving that people began hiring him to drive everything from muscles cars to motorized rickshaws in order to win bets and make money for themselves.
One fateful day while in a motorcycle race, Arthur was getting ready to cross the finish line when what could only be described as a monster came out of nowhere and knocked Arthur off of the motorcycle and sprawling onto the streets. In pursuit of the monster were three people: John Constantine, Young Zatanna Zatara and L'Iegos the demon, summoned by Constantine to help battle their foe. The fight was nearing its end and with a few words the two magic users used their combined powers to send the monster back to whence it came. It was at this time Zatanna noticed Arthur who had managed to get nearly cut on half by the wheel of the motorcycle and was losing blood fast. Zatanna panicked as she knew she couldn’t just leave the boy there but she also knew that her healing spells weren’t strong enough to save him from his fate so she opted to try something that she had heard of in a story. Like the mighty Merlin, Zatanna bound the already summoned Estargon to the boy in order to save his life much like how Merlin saved Jason Blood from death by bonding him to Etrigan. Arthur was saved but now he was forever changed but eventually Arthur got used to demon’s presence and found that he could ‘aim’ it at those who did wrong and use his curse for greater purpose. A year after his unfortunate event, Arthur was approached by Zatanna to join a new division of the Justice League called Young Justice which he reluctantly accepted.

Notes - [this can be how you met your mentor, just don't get too long winded]