Alfred Stryker is the first villain Batman ever fought. He was a businessman who murdered his partners so he could inherit their stock.
Stryker and his business partners signed a contract that stated that if one partner died or left the company, their stock was to be divided equally among the ones remaining. When Stryker fell onto hard times, he decided to kill his partners. After killing two, the last came to him, but he was rescued by Batman. When Stryker tried to kill Batman, the Dark Knight punched him into a vat of acid.