The JOKER.

Jackson Rupert Riddle is the first born of William Riddle, When William saw for the first time the baby in the arms of his wife Cassandra he remains literaly without words, for a period he was less violent and oppressive with Richard and more caring and present to his son.
William taught to Jackson very much things, likes how wins a fight, how kill someone if necessary, how torture someone to take information, how plan a right strategy before to do something, ecc...

18 years later, many things changed. Jackson started to need his own freedom and William returned to be violent and oppressive towards Richard.
With all his father had taught him, he started to ponder what to do with his life and since killing him to earn all his richess was out of plan, nobody would be so suicidal to try to kill William, and since he had the attitude of a criminal, he decided to give himself to that kind of life. With a group of people, he started to rob jewelers and banks, always wearing a clown mask to not be recognized.

In that period, he also met Carlie, with whom he firstly had some dealing as criminals, her skills with frauds were simply perfect for his business and it soon turned into love. They dated for a time, until he met his fate.
One day, he committed a big mistake, a hasty attemtp to rob a big bank, which is never a smart thing to do. They got captured, he along his men. It was due to the fact his mother was in the bank and he had to rush to her to protect her from his men.

His father, of course, didn't take it well at all, in fact, he was totally angry and even denied him. And to make sure he would learn his lesson in the harshest way possible, he also sent him to an asylum, where he spent many long years and where he completely lost his sanity,

It had not been easy to him to be there, he was completely destroyed and thought about Carlie night and day. Though, at some point, with some bad friendships he made there, with whom he kept plotting against the doctors and nurses, led him to the staff's revenge. They beat him up badly and even tortured him. Ever since that day, his change was complete, he kept laughing at everything, all the time, lost that bit of humanity he had left and became the worst fear of the people there.
He named himself the Joker, since the name his father gave to him literally made him sick to use it, for how he hated him and eventually, he managed to escape from the asylum with some "friends".

When he was imprisoned there, William made sure everybody would think his son was dead and that same news was given to Carlie by the few of Jackson's men who managed to escape the bank.

Right now, he is the leader of the criminality in Hagen city and the biggest fear of other criminals of the place.
He always wear clown like make up, it became his "trademark".