“Genius, billionaire, playboy, philanthropist — and the man who snapped his fingers for the universe.”
Evolved from the cave-built Mark I to dozens of iterations. A wearable weapons platform combining flight, offense, and defense.
The compact reactor in his chest — first a medical device keeping him alive, later the power source for every suit.
The AI assistant managing combat and analysis. After Vision's creation, F.R.I.D.A.Y. takes over the role.
A genius engineer hiding guilt behind jokes. Realizing his weapons were killing people remade him — that guilt became responsibility. He thinks in logic but decides on instinct. Across the series he oscillates between "I have to fix everything myself" and the post-Avengers PTSD of "this time I can't even trust the others." The final snap is both the climax of that compulsion and its end.