Who's Tommy Arrow?

Tommy is a very good friend of the protagonist. When he was young (8 years old), his mother was killed, and his father was carried away by hatred and just wanted revenge and left him. Therefore, he often plays in the protagonist Oliver's house since he was a child, and he is familiar with the protagonist's house.

His full name is Tommy Merlin, his father is Malcolm Merlyn, and Malcolm is the chairman of Merlin International. His family is as rich as the hero's. The two families were close, but Oliver's father was killed by Malcolm. Malcolm is the villain in the first season of Arrow, trying to destroy the Palm Lake area by artificial devices, because his wife once opened a clinic in Palm Lake to help the poor there, but when she was killed by robbers, no one came to save her in the street, so Malcolm wanted revenge. He planned to kill Oliver's father because Oliver's father didn't support him and wanted to interfere with his plan.