Another of his legal advisers, KevinJon Heller, said that from the scope of the trial - thought to include 1.2 million pages of evidence, numerous crime scenes and hundreds of witness - it was understandable why Mr Karadzic, who is not a trained lawyer, had stayed away.
Marvel Studios' President Kevin Feige is producing and Jon Favreau, Louis D'Esposito, Charles Newirth, Victoria Alonso, Stephen Broussard, Alan Fine, Stan Lee and Dan Mintz are executive producers.