In music there are only 12 notes, so it's no wonder so many songs sound the same. But what about someone's voice? The way someone speaks is not bound by any kind of scale or music theory, rather it's the sum a person’s upbringing, their physicality, and their personality. So why do so many cartoon characters sound so eerily familiar? In this list we highlight 10 cartoon characters whose voices (and often their likenesses) are based on other actors. We also mention 5 other cartoon voices that are impressions in the bonus sections of related entries. If imitation is the sincerest form of flattery, these actors have been thoroughly praised by some of the best.

Homer Simpson (The Simpsons) - Walter Matthau

Over the past 3 decades The Simpsons has been on the air, America’s favorite family has gone through many changes. Aside from the quality of the animation, the most noticeable...