Professor E

There are two Professor E's (they are no way connected with each other in any way). The original Professor E is a nerdcore rapper. Three tracks have been released since 2007. E. Gadd, sometimes referred to as Professor E. Gadd; known as "Professor Oyama" in Japan, is a character who has made a number of appearances in different Mario games, each time appearing as a mad, but friendly, gadget-inventing scientist. His full name is Elvin Gadd. By day Professor E is a mad scientist who specializes in economics