DC's Legends Of Tomorrow: 10 Arrowverse Characters Who Should Join Season 2
4. Roy Harper
Appeared In: Arrow
Roy "Arsenal" Harper was a staple of Arrow throughout its first three seasons, up until he took the fall for Oliver by coming out as the Arrow, faking his death in prison, and leaving Starling to start his life anew, though he returned for a single-episode appearance in the show's fourth season.
With Roy still, essentially, "on the run," bringing him onto the team for season two would be a good way to give the character the chance to stop having to look over his shoulder or worry if someone like the Calculator will find him again. On top of that, he'd be able to step out from Oliver's shadow, stop being a sidekick, and make himself a legend in all his flip-fighting glory.