NOTE: Post Updated March 2019
With the help of undercover industrial espionage spy Madame Masque, Mordecai Midas buys Stark International and renames it Midas International. Apparently, she didn’t know who she was working for, so she leaves and takes Tony Stark with her, and they go bump uglies for the evening.
The next day, he’s got an emotional hangover.
I am pretty sure this is the first time he lost Stark International, but it won’t be the last. It all gets revealed in the end. Jack of Hearts first fights Iron Man and then they team up, along with Guardsman, against Midas.
They also use a whole slew of remote-control suits.
In the end, Madame Masque and a bunch of innocent bystanders are turned into gold by Midas, so Iron Man has to recruit Hank Pym to help him change them back.
And then later he fights Growing Man.
Creators: Bill Mantlo and George Tuska (#103-106), Keith Pollard (#107)