Iron Man

Basic Info
Iron Man has not been released yet, but will be available in the upcoming I am Iron Man event. Iron Man takes 310 shards to unlock, and he will come at 5 stars. He will most likely be extremely hard to get as you need 5 Shield characters to play in the event, and will probably need to be a high level to even participate, much less unlock him. Nobody knows how long the event will last, but the two other events at this point are the Elektra and Crossbones event, and those will last for almost a year, so you should have a good amount of time to farm for him.