8) Superman
As of right now, Tyler Hoechlin has only been confirmed as appearing in the first two episodes of Supergirl‘s second season. With that show making the leap to The CW, it makes sense that they want to get viewers to tune in those first two weeks for the Man of Steel and then stick around moving forward, but it’s hard to imagine the character just vanishing when that fortnight concludes.
Not including him in this four night event would be a huge blunder on the network’s part, because as great as Supergirl is, seeing The Flash and Green Arrow standing alongside the new small screen Superman is even more exciting (and something it’s fair to say not a single one of us ever expected to see six months ago).
Even if he only has a glorified cameo over these four nights, Clark Kent making his presence felt in this crossover is a must and would make it a truly special event for fans.