Issue: #81
Professor Farnsworth invents a reality-reversing machine that makes everything opposite of what it was (or is?) and somehow manages to send Fry a thousand years into the past rather than the future. And if that sounds confusing, it's because it makes perfect sense.
Creators: Ian Boothby, Nathan Kane, Jason Ho, Mike Rote
Characters: Merlin, King Arthur, R2-D2, Mom, Professor Farnsworth, Dr. Zoidberg, Leela, Ipji, Igner, Bender, Sal, Scruffy, Hattie, Fry, Larry, Roberto, Calculon, Walt