Sears CEO Eddie Lampert was so ruthless in his cost cutting he would pit his own divisions of sears against eachother for bonuses an even continued employment. he declared a moratorium on any in-store livery updates for 25 years and played the company off its stock to increase its value. the guy bilked sears for personal wealth hovering around 2bn and left shareholders holding the bag.
Al Dunlap, former Sunbeam CEO, was so ruthless people called him "chainsaw al." he was notorious for massive layoffs, factory shutdowns, and threatening physical violence against board members. the guys famous catchphrase was "if you want to be liked, get a dog." he died in 2019, but is really only remembered for massive accounting fraud nowadays.