Great White Shark

Origin:
Steve Spencer came from a rich family that were owners of a very successful technological company 'Spencer Corporations'
When he was a child Steve was fascinated by sea life, his favourites were sharks, he wanted to have abilities like theirs
Steve never had a real job and relied on his parent's wealth, he was always cocky and a smartass
On Steve's 21 birthday, his family and him were celebrating on a boat they bought him and were in the middle of ocean
Suddenly pirates attacked their boat and shot Steve's whole family, they tried to shoot Steve too but he managed to jump off the boat into the ocean
The pirates drove away in their boat leaving Steve in the middle of the ocean alone, he was also bleeding, pirates managed to shoot him in the leg
Sharks attacked Steve and they almost killed him but some random fishermen appeared and managed to save him
Steve lost his legs and his left arm, he also had barely any skin on him since the shark attack, he was mostly flesh
Steve used his wealth and his parent's company's resources to fuse himself with a robotic suit of armour because he was useless in his normal form and the machines that were keeping him alive didn't work well on him
The suit he was fused with in the beginning was a standard suit that could only do standard human things but Steve later upgraded the suit into superhuman capabilities to make himself into a superhero
Steve no longer acted spoiled and he wanted to help people, he adopted the identity of a Shark for his superhero persona because he was always fascinated by them
Steve upgraded his suit to look and be more like a shark, he made the suit waterproof but that came in expense, the suit needed water to stay active but it could survive for a long time without water
Now Steve is a superhero by the name 'Great White Shark!'