5. Roy Harper
Once a struggling teenager, later considered a thug, Roy Harper is a character who truly transformed throughout the course of his tenure on Arrow. While he was primarily part of the show early in its run, he did make appearances in later seasons as well.
The thing about Roy is that he is perhaps the one character who was the most like Oliver. Even though his primary connection to the team came from his relationship with Thea, he was always fated to be a member of Team Arrow.
For a while, Roy and Oliver had a level of respect that helped them to connect with each other. They worked well together and over time, they formed a sense of brotherhood that is hard to ignore.
Even as Roy took on isolation in an effort to protect Oliver’s identity as “the Hood,” he would come when he was called upon. He would help Team Arrow whenever he could, and as a character, he is perhaps one of the few members of the team who was as vital to the development of the show as any of the other core members.
When you think of Roy Harper, you probably think of a great fighter. But it is his loyalty that is his greatest trait.