How to unlock Hulkbuster

[Nifty50]

i'm done with Anger Management but still i don't have hulkbuster :(

[snips]

you wont see hulkbuster in your character list.Take any iron man hold D you will find hulbuster there

[Jerresh]

Hulkbuster is only playable in the fight against hulk in the level and in the hub worlds, like the previous post said, hold your 'tag' button and you can select it from the Iron Man suit-up screen.