Edward has also a 'gentleman's policy'...He is not particularly bothered about committing his crimes in order to gain material things. He gains a thrill and gratification out showing off his intellectual skills. Whoever he targets,anything from store clerks to bank managers,he sets up sort of a challenge between them...it can range from anything. If Edward wins,he leaves with what he is after,if the victim wins,Edward will accept and leave. He notices that asking riddles are the most complex form of challenges, and are therefore his personal favourite and he never loses.
Wherever he goes he carries a briefcase which contains a laptop (to hack and gain info,etc,),a gun (Which is only used to threaten) and puzzle games (for his hobby and to challenge his target).
He dresses with impeccable standards. A sharp business suit,green,his favourite color...as geniuses pick that color.
He later becomes The Riddler,realising he must become more than what he already is to defeat Batman.