Sid is a big gambler and quite good at it, too. He has the money to gamble it all away and still have more left over.
Sid is cocky and flirtatious. He doesn't care about who he's talking to or where they're from - if they're attractive enough to meet his standards he will happily flirt with them and hit on them. He knows about his good looks and that he can get anyone he'd like and he abuses that power to humiliate people.
Sid grew up rich and spoiled. He was generally a bad kid, being the typical brat. If he didn't get his way, he would throw things and break stuff. Though he was a horrible kid his father adored him, treating him like that of royalty. His mother died in a car accident when he was nine, leaving him with a bad memory of her. His mother hated him and his bad behaviour, leaving him with a sour taste in his mouth when he would think of her. He was left with his father, abusing the power he had over the man. As time went on, he became a better child inside of the house. As a teenager, he often got in trouble outside of home and in school. Regardless, he was given all he wanted or needed. Growing up around Casinos with the flashing lights of slot machines and card dealers, it was only logical that he became quite the gambler.