E is a pseudonym used by Mark Oliver Everett on his first two major-label albums A Man Called E and Broken Toy Shop and is taken from an old nickname. Mark frequently explains that there were two Marks in the area while he was growing up and people began to differentiate between the two boys by calling them by their initials (thus ME.) With time, however, the M began to be dropped and Mark became known simply as E.

Later, during his recording career, this also became Mr. E as can bee seen in the title of the Dasieas of the Galaxy bonus track Mr. E's Beautiful Blues.