Using a Master of Disguise I would have him become President Barack Obama. On this trip The M o D will gain access to the bank vault saying that he is checking out the most recent security measures. I would also gain control of Mystique (X-Men) and have her morph into the Bank Manager and it is through her that I would gain all the money from the vault!!!
Super Hero invasions are something to be feared! I think the biggest flaw with this plan is the use of the Barak Obama disguise. Obama is so feared by the big banks that they would likely seal off their vault and add guards at the site of him! For god’s sake he is trying to legislate redistribution! lol