By now, anyone with a functioning pair of eyes has seen an episode of The Simpsons. Since the show's Fox debut in 1989, Homer, Bart, Marge, Lisa and Maggie have become more than pop culture icons, and fully entered the fabric of American life. This has been possible because the writers and producers have gone to great lengths to turn Springfield into a living, breathing town that exists beyond the main cast of characters.

Over the years, side characters like Burns, Ned Flanders, Smithers, Principle Skinner, Apu, and Moe have become cult favorites among fans across the globe. But longtime Simpsons aficionados know that there's a whole world of hilarity outside of even those regulars. That’s exactly why we’re taking a look at the characters from The Simpsons who tend to get overlooked in favor of their more popular contemporaries. From brilliant one-shots to semi-regulars who just haven’t gotten their due, we give you The 25 Most Underrated Simpsons Characters.