Pele
Senna, Prost, Mansell, and Piquet in the classic '86 season. Four drivers who defined an era. As the years went on Mansell and Piquet despised each other, Prost and Senna had a bitter rivalry like nothing else in sports, Mansell hated Prost, and Senna died while leading at Imola in '94, Michael Schumacher going on to win that race and the championship bringing their era to a final close (Mansell's shytty comeback attempt in '95 better left unremembered).