In this video, you see Stephen Amell. You see how he became The Green Arrow and how he worked for that. You can also see The training with Diggle. At the end, you can see Arrow in the city chasing a criminal.

In this video, Oliver is shocked when learns that Slade came to Starling city. Slade charms Moira and Thea Queen, while regularly inserting subtle threats against Oliver. Oliver manages to notify his partners, who join in the house. At the end of the episode, it is revealed that Slade has placed cameras to monitor their move.

Stephen Amell Workout for Arrow:

Stephen Amell said: "People are always asking about my training regimen for Arrow. Well... We start shooting Season 2 in 42 days. In the 38 days since we wrapped Season 1 I have done nothing. At all.

Today was the first day of training for Season 2. Ran for 65 minutes then did abdominal / leg scissor thingies. It hurt... Not as much as it'll hurt tomorrow, but it hurt."

Helena Bertinelli is the daughter of late former crime boss Franc Bertielli and the ex-grilfriend of Oliver Queen. She broe up after she realized he was still in love with Laurel.
She tried to kill her father but Oliver intervened and she was killed by her father with her own crossbow.

Biography:
Before the death of her fiancé Michael, Helena tried to turn her father into the FBI. Her father mistook the evidence collected by Helena with her fiancé and had him killed.

Malcolm Merlyn is the Dark Archer. He is the Tommy's and Thea's father.

Malcolm Merlyn

Floyd Lawton/ Deadshot
He is an assassin who never misses his target. He murdered the brother of John Diggle, Andy Diggle. After a target killed, he tattooed victim's name on his body.

Colin Donnell portrays Tommy Merlyn. He is Oliver's best friend. Like Oliver, Tommy has romantic feelings for Laurel.
His father is Malcolm Merlyn. Tommy died saving Laurel at the end of the first season's finale.