This is not a fan-cast it a traditonal sense as this is not a fan-cast for a tradional TV Show/Movie. This fan-cast is about the Justice League of Amercia CW Version which i honestly think is going to happen eventually. These are the charcters i would like to see for The CW Version of the Justice League of Amercia:
The Creator:
Cynthia Addai-Robinson as Amanda Waller.
After the events of Season 3 or Arrow and Season 1 of Flash. Amanda Waller decides to create a group that can protect the pepole but also give them hope for the future especially because bigger and bigger threats are coming. Amandar creates the Justice League of Amercia and along with AUGUS fiances the group so they can continue their exploits. She will be providing tech support for the team.
The Leader:
Stephen Amell as Green Arrow
While reluctant at first, Arrow decides to join the Justice League of Amercia because while he does not trust Waller he can see why she created this group as Arrow knows that bigger and bigger threats are coming. In order to protect everyone he joins the group as it's leader.
The Villgantae:
Katie Cassidy as Black Canray
I know that many pepole will disssagre but here me out. I don't think that Caity Lotz will be the Black Canray because at the end of season 2 they were clearly setting up that she would take over the role of Black Canray from her sister Sara. I think inbetween Season 1 and 2 she is going to receive training by Sara in order to make her the Black Canray.
The Scientist:
Brandon Routh as Atom
By guess is Atom will be the Scientists of the Justice League of Amercia and will be the most intellgent member of the group. Atom will most likely be a scientist who creates a suit by Amanda's request that is perfect for recon missions. Atom after doing recon for Argus is asked if he wants to join the new group Amanda is creating and he accepts taking the role of Atom.
The Speedster:
Grant Gustin as the Flash
Of course this was a obvious choice. I think Grant Gustin's Flash would join the Justice League of Amercia due to his desire to help those in need and become a true hero. Grant Gustin would be the most inexperinced member of the group but is also the most powerful as he can use his superspeed in many suitations to hell save the day.
The Hothead:
Robbie Amell as Firestorm
Firestorm has been a reocurring Justice League member. While i do wonder how they are going to pull off his powers on the Small Screen. It will be certanly intresting to see he powers on Flash and i would like to see how they pull off the costume.
The Mystic
Devon Aoki as Katana
I think it's good to have a good balance between male and female casts and Katana would make a lot of sense as she was in the Justice League of Amercia. My Guess is that she wil be the most experinced member of the group as she has been training in Japan for many years and will give advise to the more inexperinced members such as Firestorm.
Villains:
HIVE
Hive will be the main villains of the show as they have been already introduced in Arrow and it would make sesne for them to be the villain. They have numerous villains on their side who assist the group with their plans. These villains include:
The HIVE Queen
The leader of Hive and the one responsible for its creation. She recurits superpowered villains and mercenaries in order to acheive her goal. She wants revenge for Amanda Waller for ruining her life when she was younger. She wants her and ARGUS to suffer
Manu Bannett as Deathstroke
My guess is that Deathstroke escapes the Supermax prision and joins HIVE as a mercenary for hire. He will be a recurring villain working with Hive to talk down Argus but also Slade has the agenda of killing Arrow and hurting everyone he cared about.
Willia Holland as Chesire
After leaving Starling City along with her father Malcolm Meylrn. She is trained in the art of combat and takes on the idenity of Cheshire in order to help her father carry out his planes. Malcolm Melyrn later joins HIVE and Chesire becomes a agent working for HIVE
Hector Hammond
The head scientist at HIVE and is the one who creates all the technology for the HIVE members. Creates a new suit for Deathstroke and Cheshire.
Vandal Savage:
The benefactor of HIVE and the one who is running Hive besides the Hive Queen. Vandal is a immortal and plans using HIVE'S tech to rebuild the world so it may become peaceful again. He plans to take out each of the Justice League Members one by one using their weaknesses.