History: Charmed life, silver spoon, bla bla, get to the juicy parts. Part one: dad worked a lot, didn't exactly go out of his way for his only kid, his solution was to send him away to school because then at least the kid couldn't also be disappointing nearby. Which might have been anticipated, granted; his own dad, grandpa, didn't stick around much, always out in the middle of nowhere looking for a dead guy, and the kid, well. By 14 years old he was already enrolled in MIT, had a broken heart, and wasn't slowing down to achieve the first two doctorates of several in his life, before both of his parents were killed four years later. The graduation ceremony was two months later. Maybe dad would have been proud. Part two: Stark Industries needed someone to helm it after the passing of their fearless leader, and his only son and heir didn't waste time taking on the job. It wasn't a total disaster. He was brilliant and magnetic and didn't shy from any challenge. One of them even agreed to marry him. Then he disappeared. Months later, when he turned up again, the story was this: Tony Stark had been held as a POW in Afghanistan until a daring rescue mission brought him home. Shaken and paranoid, he shut down the weapons manufacturing division of the company he inherited and built himself the most expensive bodyguard ever, the Iron Man. Who was inside the armor remained a mystery except to those closest to him, who knew it was Tony himself putting his life on the line whenever he saw someone in need and, as it turned out, they didn't have the stomach for it. He told even less people after that. That would have been crushingly isolating, if not for the next part. The next part brought the Avengers, a team assembled to to take on what each of them could never do on their own. They all had their secrets, and it was an unconventional assembly, but cautiously they built a family in the Stark family home where Tony got to know them as both Iron Man and Tony Stark. They would be his constant rock through the wild highs and lows of his life for the years to come, a team of endless second chances even through total, unforgivable disasters. Tony was good at those.
Powers: Outside of the armor, Tony is a baseline human with a genius level intellect that has allowed him to build himself into a superhero. Physically, he has been augmented by a modified version of Maya Hansen's Extremis virus, imbuing him with a rapid healing rate, modified cranial structure and biologically connecting him to the Iron Man armor and its functions through a supercompressed underamor stored in his bones.
The Iron Man has gone through multiple iterations and is adaptive enough to specialize in a range of crises. Any model of the Iron Man armor is likely to have a range of abilities including: increased strength; flight; kinetic, electric and acoustic projection; atmospheric insulation; non-lethal through anti-aircraft armament; and a range of scans, radars and sensors collecting data at all times. The current iteration uses an atomic battery, but also collects solar power as one of many backups against a full power drain or interruption, as this can effect Tony physically due to the link through Extremis.
In Game: When confronted with a problem, Tony is determined to solve it, and the dome over New York City is definitely a problem.