Infamous Iron Man by Bendis & Maleev

When Tony Stark falls, the mantle of Iron Man is taken up by...Doctor Doom!?

Collects Infamous Iron Man (2016) #1-12, Invincible Iron Man (2017) #593-600. There's a new Iron Man in town, and his name is...Victor Von Doom! The Marvel Universe's greatest villain is no stranger to armor, but now he's trying something new on for size- heroism. And where Tony Stark failed, Doom will succeed. But what is Victor's master plan? That's what a great number of folks want to know - including Ben Grimm, Pepper Potts and the other Iron Man- Riri Williams! In his heroic quest, Doom faces a cosmic-level adversary - and his most mortal enemy, whom he thought he would never see again! But what is the shocking truth behind Victor's reincarnated mother? Plus- When the search for Tony Stark begins, the time comes to decide, once and for all, who will wear the armor of Iron Man!