Simon, a member of the creative team behind the long-running show, passed away aged 59 on 8 March (15) after a long battle with colon cancer.

He was remembered by his colleagues on Monday in a tribute posted at the end of the episode which aired in the U.S. that evening.

The black and yellow message hailed Simon as "one of the greatest comic minds ever," adding, "Thank you, Sam," before closing with a picture of the animator surrounded by cardboard cut-outs of the characters he helped create.