sentences:  Carter visited a friend of Simon, a scientist at Indiana University in Bloomington, who had been able to genetically manipulate flies so that they grew legs from their eyes.After Carter had created the character of The Great Mutato, he discovered that cartoonist Matt Groening had already created a character with the same name—although with different pronunciation—for a comic book entry of "The Simpsons".Carter contacted Groening, who gave Carter permission to use the name.