For Ward to batman;Robin, i choose the person i sighted as a Teen Titans Robin anyhow...
Logan Lerman as Jason Todd/or Dick Grasyson, who ever he's portraying..
For Aqualad of Atlantis I choose Edwin Hodge
For the Arrow maiden Artimus: I choose Dianna Agron
For the speedy yet smart Kid Flash, I choose Xavier Samuels
And for Superboy Prime, cloned from the DNA of Superman, I choose Steven Strait
For Miss Martian the Neice of Martian Manhunter J'onn J'ones, I choose Kristen Prout
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And now for the older Heroes
Batman would be played by Michael C Hall
Superman would be played by James Caveziel
Martian Manthunter will be played by Peter Mensah
Josh Holloway will play Artimus' uncle Green Arrow
The Flash would be played by Michael Rosenbaum
I choose Kevin Mckidd as King of Atlantis Aquaman
So there you go, Your soul is mine, so says the souleater blah blah blah...