Satoru Akefu

Satoru is the head doctor of TG University Hospital and presumed mastermind of the Locacaca Organization. Supposedly 89 years old, he is an elusive figure with almost no public presence despite being in charge of a major institution of medicine.

In reality, Satoru is a retired doctor of TG University Hospital who Tooru is impersonating with his stand. He supposedly recedes in a nursing home in the Ibaraki Prefecture, though it is implied he might have been killed.

(Source: Jojowiki)