TIL that Billy West, who does the voice of Philip J. Fry's on Futurama among other characters, intentionally made Fry's voice close to his natural voice as a job security measure because it would be more difficult to replace him.

https://www.thematthewaaronshow.com/ep-114-billy-west/%5C

https://www.reddit.com/r/todayilearned/comments/15owhaz/til_that_billy_west_who_does_the_voice_of_philip/