Rank season One of DC Shows.

Give a rank to Season One of DC shows we have seen so far, which one was the best, and the next one and so on.

I think we should include (Only first seasons) of Smallville, Arrow, Gotham, Flash, iZombie, Constantine (13 episodes, mini first season, lol.)

My rank -

1. The Flash.
2. Constantine.
3. Gotham.
4. Smallville.
5. Arrow.

(haven't seen iZombie)