Iron Heart | Behind-The-Scenes The MCU began with a suit of armour. 17 years ago, Robert Downey Jr suited up for the first time as Iron Man, cladding himself in a hotrod rocket suit and kicking off five phases of interconnected storytelling. Now, we’re about to see another character literally build themselves into a hero before our eyes: Riri Williams, aka Ironheart, the prodigious teen genius first introduced in Black Panther: Wakanda Forever, who puts her technological expertise into making he