Malcolm Merlyn

Malcolm Merlyn, known in secret as the Dark Archer, is a wealthy businessman and prominent figure in Starling City, and an acquaintance of the Queen family. His family owns Merlyn Global Group, presumably making him the CEO. Later in Year's End it's discovered that he has taken up the persona of the Green Arrow's arch nemesis the Dark Archer also known as Merlyn in the comics.

Biography
Malcolm Merlyn met with Moira Queen to discuss the vigilante Arrow. He expressed that he was uneasy about him. At first Moira expected this was because he had a large amount of wealth, but he replied that it was because the vigilante was targeting "the List".

Malcolm later invited Moira to talk with him upon short notice. They discuss whether Oliver might actually be the green-hooded vigilante, and he holds up his end of the argument that he strongly believes that Oliver is. After this, he sent a man to kill Oliver based on his assumption. After the chaos cleared, Moira went to consult with him. Moira threatened to ruin his life if he ever hurt the Queen family.

When Moira was almost shot at, she earned a concussion, and so had to stay in bed for several days. Malcolm visited her during this time, much to her distaste. He offered her friendship as they previously had, but she was hesitant. Later, his son, Tommy, came asking why his father cancelled his credit card, while the elder was practicing fencing. His father replied that he had permanently cut Tommy off from his trust fund and the family.

Malcolm decides to take action as now Walter is getting very close to discovering the truth about the List. Moira tries to reassure him that she can get Walter off the track, but Malcolm does not believe her. He also asks if they should send their 'associate' the Dark Archer to take out Walter. Later he goes as the Dark Archer to try to kill the vigilante by luring him with hostages. As Oliver arrives and frees the hostages, He attacks, and tries to see who his foe really is. He fails when Oliver stabs him with a knife  Both manage to escape. And Malcom decides to take Walter so that Moira will cooperate.

Abilities
Expert Archer: As the Dark Archer, Malcolm has shown himself to be an expert archer. He was even able to fire three arrows at Oliver as Arrow.

Trivia

 * In "Year's End", after Oliver claimed that the vigilante needed a new nickname other than "the hood", Malcolm suggested the name "Green Arrow", a clear reference to the vigilante's original comics name. However Oliver did not like it.