Re: Titanium Man or Crimson Dynamo?
I would say both.
I think it could work if it deals with the demon in the bottle story line, and you have more reson for war machine to be around because stark cant handle two armoured villains at once. I think they should include the mandarin and Justin hammer in the story too!!
"I'm glad you asked that, because I wanted to take this time to explain my evil plan..." - Ultron