In the comic books on which all this is based, Ultron is a robot created by Ant Man – Hank Pym, who rebels against his creator and develops a deep rooted hatred for the Avengers and eventually all mankind.
There has been much speculation on the internet lately that due to this incarnation of Earth’s Mightiest Heroes being absent Hank Pym (who created Ultron in the comic books) Whedon’s Ultron would be a creation of Tony Stark; maybe even “Jarvis gone bad”.
This casting seems to suggest that Jarvis may not be the source of Ultron’s artificial intelligence at all.
Furthermore it remains to be seen if ULTRON will be a voice over role for Spader or maybe a voice over with performance capture CGI as well or maybe we’ll actually see an Ultron who is based on the mechanical Marvel idea of a “Life Model Decoy” – more or less a cybernetic robot that appears completely human. I’m personally hoping they go with the totally “bad ass robot” version who orchestrates a complicated attack on the Avengers from the future!
Spader is an interesting choice to me – his past experience is all over the map; from SEX LIES AND VIDEOTAPE to co-starring with William Shatner on BOSTON LEGAL and even a short run as eccentric CEO – Robert California on THE OFFICE, it’s been hard to pigeon hole him as one type of character.
AVENGERS: AGE OF ULTRON is scheduled for the Summer of 2015.