Seems like an interesting enough premise, I'll bite!

Name: Renault
Age: Mid 20's
Gender: Male
Appearance: (Assuming Fantasy) : A tall thin figure, cheeky grin constantly plastered on his fair yet far too pallid face. A large cloak swirling behind him, a loose brown leather jerkin covering a doublet, slightly too fancy for it's purpose. Tight, form fitting breeches that refuse to remain completely flat. A feather of an eagle stuck ceremoniously in his cap, a strange shimmering glinting around the object. An ornate yet obviously battle ready saber hung to the left at his waist. A dark leather glove covers his right hand, the left ornate with various scars. A worn yet rather nice looking lute strapped to his back.
(Assuming Futuristic Fantasy): Tall, thin, almost emancipated. His eyes glitter with mischief as he stares unceremoniously at whatever catches his eyes at the time. A black leather frock coat pulled tightly against his torso, a deep purple tie and vest just visible beneath his neckline. Dark grey slacks cover his legs. A scar works it's way down over his face, just missing a half closed eye. A Ben Hogan hat atop his head, looking a bit too informal for the rest of his attire. A fencing saber strapped to his left side, this time accompanied by a bolter pistol attached to his right. A black leather glove covering his right hand, his left replaced with what looks to be a rather high quality robotic replacement. A small ukulele slung over his shoulder, strapped to his back.
Ability:
Rather Competent / Decently Skilled at 1 on 1 melee (Sword/Fencing) combat. 
Extremely Charismatic
Musician - Can play a variety of instruments. Is most skilled with Lute / Ukulele. 
Bard - Can infuse his music with magic, granting various buffs. ( Courage, Strength, Healing, Defense, ect.) or various detriments ( Slow, Confusion, Sleep ect.).
Cursed - Can use Dark Magics and Dark Arts at risk to his humanity.

(Futuristic) 
Competent with small Handguns.
Robotic forearm : Allows for various attachments, stronger than average individual, vulnerable to electricity.

Overall:
Able to buff and assist teammates as a supporting individual. ++
Can use (somewhat limited) Dark Magics and Demonic Spells / Abilities +
Competent in one on one combat using swords. +
Very Charismatic as an individual. (Diplomacy, Bluffing, Coercion all far easier for him.) +
Very vulnerable to holy attacks and damage. --
Demonic powers inflict self damage, degrade humanity/sanity. --
Statistically below average as a combatant. -

Occupation (optional): Bard, Wandering Traveler
Personality: Charismatic, Playful, Condescending, A trickster. Will happily manipulate individuals to his own gain. Cares not for overarching ideas of good or evil. Is only motivated for personal gain. While extremely charismatic and likable, most individuals begin to sense something slightly off concerning him after an extended period of time.
Backstory: Deciding to make his own fortune instead of staying in his village, Renault set off to discover his own path as a bard. Quickly realizing he had a magical talent associated with music he sought to develop it further. In hopes of pushing his talents to greater heights he travelled to a distant mountain that was said to be home to a talented sage. He arrived, set up camp at the base of the mountain, and then remembered waking up three months later, magical talents greatly improved and a painfully pulsating pentagram carved rather harshly into his right hand. To make matters worse, before he even had a chance to understand the new magics entrusted to him the nation of Chou suddenly transformed into Caramea. Shock at the lack of magic, and fear for his possible demise and persecution, Renault became a bit more cautious... that is, until he realized that if everyone but him were able to use magic, he could blatantly use his music to his own advantage. Thus he set off, working to gain a small nest egg via manipulation and magic, hoping to get enough cash to live in decent standing, quietly, away from this new and rather frightening world wiped blank.