The following contains spoilers for The Simpsons season 36 episode 19, "Abe League of Their Moe," now streaming on HuluThe Simpsons paired up two of their most enduring supporting characters for a surprisingly emotional storyline, 27 years after pairing them up for one of the show's wackiest episodes. The world of The Simpsons is a deceptively massive one, as the long-running animated show has fleshed out the small town of Springfield into a surprisingly bustling and active community. This has the benefit of filling out The Simpsons' supporting cast with plenty of minor characters who can take the reins of an episode and drive a plotline.