Season 2 saw the introduction of the first iteration of a Canary on Arrow when Sara Lance exploded onto the scene, swinging her bo staff and defending women to the terror of every murderer, mugger, and rapist in Starling. Sara as the Canary was exactly the heroine that Arrow could handle for one simple reason: she was ready to go from her very first scene in the present. Arrow is the story of Oliver Queens transformation from spoiled playboy with terrible hair to the hero Green Arrow, so the show is best when the focus is on Oliver and his work to save the city rather than on other vigilantes elbowing their way to the front of the pack to grab a mask. Sara got her training from the League of Assassins off-screen, so Arrow didnt have to take huge chunks of time away from the title character to justify the woman in black on the streets by his side. There was no assembly required for Saras Canary, and so she was a great fit for the show in the first half of Season 2.
Fiction buff and writer. If it's on Netflix, it's probably in my queue. I've bought DVDs for the special features and usually claim that the book is better than the movie or show (and can provide examples). I've never met a TV show that I won't marathon. Follow on Twitter @lah9891 .
