Arrow's Stephen Amell, there are a few villains from his sister shows that he wishes he could go up against. During a panel moderated by ComicBook.com's Brandon Davis at this weekend's Heroes and Villains Fan Fest Nashville, Amell revealed which The Flash villains he would like Oliver Queen to go toe-to-toe with - in one case, for a second time.No actually, I think that some iteration of Harrison Wells, the evil version would be pretty awesome to deal with. I like him. He's smart."