Cooper Seldon

Cooper Seldon is a computer hacker and Felicity Smoak's ex-boyfriend.

Early Life
While in college, Cooper along with Myron and Felicity created a "super virus" which originally was meant for good intentions. Later on, Cooper attempted to rid of every student loan though he would be caught by the FBI soon after. He apparently hung himself before the trial though his suicide was staged.

Cyber attack on Starling City
Cooper brought back the virus for a cyber attack on Starling City. Cooper attacked the bank, knowing a truck load of freshly printed cash was to be sent if such an event occurred. Cooper kidnapped Felicity and her mother and revealed to have faked his death and worked with the NSA for years. Cooper then had Felicity re-route the truck drivers to their location and used her mother as leverage. Having no choice, Felicity followed his orders. Cooper then tied Felicity to prevent her from escaping. When Cooper realized Felicity made contact, he attempted to kill her before being stopped by The Arrow. Cooper held Felicity at gun point once more though Felicity disarmed him and knocked him out.

Trivia
The name of Cooper Seldon is likely named after Sheldon Cooper, a character on The Big Bang Theory who has an obsession with DC comics.