Joker

He spent his childhood in the slums, where he lived in a dysfunctional family. He had an older brother who was killed by a bottle fragment his mother threw at him.

Despite his prickliness, he has weaknesses. He's either repulsed by memories of his parents (he grew up in a dysfunctional family where he was hated and beaten), or, as a last resort, by using a deck of cards.
If you take a deck of cards from a poker game with him and pull out a joker, he might start acting nervous, because the card is like a voodoo doll. If you bend it, cut it, or shoot it, it will reflect back on him. Yes, you can manipulate him with a card.

He's not afraid to up the ante both in the casino and in life. He's narcissistic yet cowardly, though the smug grin rarely leaves his face.

The young man is short in stature. He has pale skin, short, mint-green hair that looks rather neat, and dull, red eyes with no light, with a greenish outer ring.
The character is dressed in:
a white, long-sleeved shirt in indigo with a silver wing design with a blue stone;
indigo vest similar to the set;
white pants;
long indigo boots that reach up to the knees;
a shoulder pad with a blue ribbon attached to it;
an indigo coat that is fluffy underneath;
a silver earring on the left ear with a stone.