I was having some kind of dream about making robots. I remember lying awake a few minutes trying to figure out if electronics was organic chemistry, and programming neurobiology, or what. (I think "O-Chem" the midwestern term, vs "Orgo" which is what they called it at my school. Like with "Pop" vs "Soda", the midwest has the objectively better word.)
Mario has a thick stache (Groucho), speaks with an outrageous Italian accent (Chico), but actually doesn't speak (Harpo) because he's just a blank slate for the audience (Zeppo).