Arrow is getting a couple blasts from the past in its eighth and final season.

EW has learned that Colin Donnell and Josh Segarra will guest-star in the CW superhero drama’s farewell season. Donnell played Oliver’s best friend Tommy Merlyn in season 1, and Segarra starred as season 5 big bad Adrian Chase/Prometheus; however, fans should expect a twist when they return, because this is Arrow.