In the season finale of Arrow, Thea Queen (Willa Holland) eventually became Speedy. It only took her three seasons to become a costumed-vigilante, but it was totally worth it.
At MCM London Comic Con Willa indicated that she hopes Thea's superhero costume will have some alterations. "For her future in season four, I hope she keeps wearing that costume as much as possible and maybe gets a yellow one with cape or something."
Listen to Willa's comments starting at the 12:22 mark.
Arrow returns this fall for its fourth season on The CW.