Jeremy Bentham

The eccentric utilitarian who tried to turn morality into mathematics. Bentham created the 'felicific calculus' - literally a formula to calculate pleasure and pain (yes, really). He was ahead of his time advocating for animal rights, women's rights, and gay rights in the 1700s when that could get you killed. His weirdest legacy? He had himself mummified and put on display at University College London, where his 'Auto-Icon' still sits in a wooden cabinet today. Occasionally they wheel him out for board meetings (seriously). His preserved head looked too creepy, so they replaced it with a wax one - but the real head is stored at his feet in a box. He wanted to be useful even in death. That's commitment to utilitarian philosophy.