It's time for an upgrade! Iron Man increases his armor's power as his title gains a powerful new writer: Bill Mantlo. Mantlo's run delved into Tony Stark's supporting cast, added a dose of industrial intrigue and brought back iconic adversaries. It begins with accusations of Stark Industries bribing U.S. senators, gets dangerous with the...

It's time for an upgrade! Iron Man increases his armor's power as his title gains a powerful new writer: Bill Mantlo. Mantlo's run delved into Tony Stark's supporting cast, added a dose of industrial intrigue and brought back iconic adversaries. It begins with accusations of Stark Industries bribing U.S. senators, gets dangerous with the return of Ultimo and reaches fever pitch when an all-new Guardsman comes calling. Next, in the lead-up to issue #100, Sunfire pits heat against iron in the prelude to the return of the Mandarin. Then, the mysterious Madame Masque and the Jack of Hearts enter the fray. And we wrap up with an out-of-this-world battle for Wundagore and a Jack of Hearts solo adventure.

COLLECTING: THE INVINCIBLE IRON MAN (1968) #92-114 & ANNUAL (1971) #4 and MARVEL PREMIERE (1972) #44