I hope everyone who attended San Diego Comic-Con International this year had a better time than Iron Man does in this issue. From January 1975, this is "Convention of Fear!"
This particular issue loosely ties into the "War of the Super-Villains" storyline, featuring a mysterious figure known as the Black Lama who pits villains against each other in a deadly contest for obscure motives. (I haven't read the entire storyline, and from what I've heard, it wasn't that good of one.) We open with Iron Man soaring through the skies of San Diego, when he's attacked by a mysterious assailant, who bolts before our hero can nab him. We later find out that Iron Man - or rather, his alter-ego Tony Stark - is in town to check up on a problem at Stark Industries that requires his attention, only to find it's already been resolved and he made the trip for nothing. He takes the time to interact with his employees, only for the Black Lama to hypnotize some of them into attacking him. Stark manages to subdue them, but the two very different attempts on his life leave him puzzled. Stuck in San Diego overnight and pent up over the recent attacks, Stark decides he needs to do something to unwind. Reading through the local paper, he sees an article about a local comic convention, complete with a costume party, that he decides might be fun. To top it off, he goes in costume as "himself," which nobody so much as blinks an eye at.
While there's a good amount of snarking on fandom, there's plenty of self-deprecating humor, with Iron Man getting flack from his fellow attendees about the nose on his helmet (which had been added back in Iron Man #68 to make his face more expressive - and which didn't last long because of how dumb it looked), including from an Iron Man cosplayer. I'm especially amused at how out of his element Shellhead seems in this story, not even having much cash with him. (And this is multi-millionaire Tony Stark we're talking about here.) There's a more somber scene where Iron Man sees how many people are dressed as Captain America, who had (temporarily) abandoned his superhero identity in the wake of the Secret Empire storyline in the pages of his own comic, another subtle reminder of how well Marvel puts together a fully-integrated universe. As an extra bonus, even if the fight with the villains is a quick one, I'm always a big fan of a superhero taking on someone from his or her rogues gallery.