An iconic Simpsons character’s voice has been replaced for the first time in 35 years. 

Sixth-grade bully Jimbo Jones has been a part of the beloved show since episode eight of the first season back in 1990.

The menacing student became known for picking on Bart Simpson (Nancy Cartwright) and was originally played by Tress MacNeille, 73.

Pamela Hayden, 71, took over the role in the second season and has portrayed the pesky character ever since. 

However, last year Pamela announced she would be stepping down and retiring.

She also portrayed Milhouse Van Houten – one of Bart’s friends – as well as Chief Wiggum’s wife, Sarah Wiggum.

Now, it has been revealed who exactly has taken on Jimbo’s role – Mo Collins, 59.

Sixth-grade bully Jimbo Jones has been a part of the beloved show since episode eight of the first season back in 1990

The menacing student became known for picking on Bart Simpson (Nancy Cartwright) and was originally played by Tress MacNeille

Pamela Hayden, pictured, took over the role in the second season and has portrayed the pesky character ever since

She featured as the school bully for the very first time on Sunday’s episode, P.S. I Hate You.

The comic starred as several different characters in more than 150 episodes of sketch comedy MadTV.

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She announced her new endeavour on Instagram and posted: ‘Some exciting news I’ve been waiting to share! 

‘I will be taking over as the voice of Jimbo Jones on the Simpsons! Big shoes to fill. Pamela Hayden has retired, and now remains a legend! Well earned!!

‘Getting that first script and seeing my name on it? Cool!! Stepping into that mᴀssive studio? Cool!! Hearing my voice to the animatics?!! 

‘So cool!! Huge thanks to the producers of the show, especially Mike Price, whom I have had the pleasure and privilege of working with on F is For Family, and (currently) Lil Kev (watch it! It’s soo good! BET+) This is RAD!!! 

‘My first episode airs Sunday (gulp!!) I’m so happy to share this news with you!’

It comes after Pamela announced her retirement in a statement via ᴅᴇᴀᴅline and said: ‘The time has come for me to hang up my microphone, but how do I say goodbye to The Simpsons?… Not easily.’ 

Now, it has been revealed who exactly has taken on Jimbo’s role – Mo Collins, 59, pictured

She featured as the school bully for the very first time on Sunday’s episode, P.S. I Hate You

‘It’s been an honor and a joy to have worked on such a funny, witty, and groundbreaking show, and to give voice to Milhouse (and Jimbo Jones, Rod Flanders, Janey, Malibu Stacy, and many others).’ 

Pamela continued, ‘Here’s to everyone who made this terrific ride I’ve been on possible. Thanks for 35 years!!’ 

‘Be well and happy. My best to you all. P.S. I’ll always have a special place in my heart for that blue-haired 10-year-old boy with glᴀsses.’ 

The Simpsons is available to stream on E4.