Mack the Knife (aka Barclays chairman John McFarlane) has lived up to his name again after the departure deputy Mike Rake and chief Antony Jenkins - but he's not the only one to pick up a nickname over the years.
Most of the nicknames in the business world, like McFarlane's, are not entirely complimentary, often representing a reputation for ruthlessly cracking the whip. Although that's no bad thing when it comes to being a top business boss - it's hard to imagine McFarlane losing sleep over the title.
So, do you know your, Macks from your Supermans?
Take our quiz to test how well you know those monikers.