Tommy Merlyn (Colin Donnell)Laid back and light-hearted, Tommy Merlyn (Colin Donnell) is the son of Malcolm Merlyn and the late Rebecca Merlyn. Wealthy and privileged, Tommy appears to not have a care in the world besides finding out where the next party is. But Tommy is more complex than that and he wants to be a better man. He has a strained relationship with his father because his father abandoned him for two years after his mother was killed.Tommy is Oliver Queen's best friend. When Oliver was presumed dead, he dated Laurel Lance and Laurel and Tommy still care about each other. Oliver's younger sister Thea also has a crush on Tommy. When Oliver returns, Tommy believes their billionaire partying ways will continue but Tommy soon realizes that Oliver is a changed man.