Phoenix Killer Armor
Designed to, well, kill the Phoenix Force, the Phoenix Killer was a collabo between Tony and Hank Pym, and essentially a chunky-looking Mecha-armor for Iron Man to pilot. Not only did it look bad, it was terrible at the one thing it was designed to do: in Avengers vs. X-Men the Phoenix Killer didn’t defeat the cosmic force but instead split it into five fragments of itself, creating an infinitely worse problem. Good job, fellas.
