The Simpsons have been around since 1989. During the show's 34 seasons, we've seen the legendary family interact with their friends, co-workers, extended relatives, townspeople, local celebrities, and even aliens.
The creators originally intended for many of these characters to be one-time jokesters or for fulfilling a very specific function in the town, but a number of them have earned expanded roles and subsequently starred in their own episodes.
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