Robert Bruce Banner is the son of Dr. Brian Banner, a brilliant atomic physicist, and Rebecca Banner, a kind, loving woman. Although his mother deeply loved him, and he, her, Brian dispised their child, jealous of the love Rebecca showed their son over him, his terrible alcoholism not helping the matter in any way. Further, Brian was terribly hateful of mutants and believed that his son might be one. Soon, he turned to drugs, which drove his mind into the state that forced him to murder Rebecca, resulting in his incarceration in a mental hospital. Bruce a child prodigy, was raised by his aunt, Mrs. Drake, and she took him to counselling, unfortunately, not a very good councilor, who taught him to suppress his great pain and rage over his insane father's actions.
After graduating from Science High School, Bruce studied nuclear physics in Navajo, New Mexico, at Desert State University as the star student of Professor Herbert Josiah Weller. He also studied, for a time, at Pennsylvania State University, but ultimately moved on and earned his doctorate in nuclear physics at the California Institute of Technology, where he met Betty Ross, a friend he would keep throughout most of his life, although, after graduation, she moved to New York to work for Oscorp. Eventually, as an adult and a genius in nuclear physics, Bruce went to work at a United States Defense Department nuclear research facility at Desert Base, New Mexico. There Bruce met legendary Air Marshal, Thaddeus "Thunderbolt" Ross, the officer in command of the base, father of Betty. Banner and Betty remained in contact with each other over the internet, and she became Bruce's lead consultant when he was commissioned to work on a super soldier-formula, the same one used in the creation of Captain America, Giving the same power that turned the sickly weakling, into the most famous Nazi-slaying patriot that ever lived.
After years of failed attempts, sleeping only when physically impossible not to, he finally made a breakthrough on a crippled dog, repairing its limbs... The day he was informed that their funding had been cut... Determined to prove that he had cracked it, he tested the device on himself... A mistake nobody would EVER forget... Official records show that Doctor Banner's formula addled his mind, drove him insane, saying that he gunned down multiple officers before running... This wasn't entirely untrue, his mind was addled and he did almost kill multiple officers, most of them would spend months in hospital, learning to walk again, but none died... He transformed into a giant gray monster and escaped, destroyed everything in his way. Walls, jeeps, tanks, nothing even slowed him as he smashed his way out.
Since going on the run, he has got in contact with a woman going by the name "Mrs Green" who is helping him work on an antidote for his condition. He contacts her by the pseudonym "Mr Grey" They have agreed to not meet until he has created a cure. Until then, he is going to continue to run, carrying the monster wherever he goes.