When The Simpsons veteran voice actress Pamela Hayden retired last year, she left behind characters she breathed life into. Milhouse Van Houton is one of them, and Hayden's farewell episode to the bespectacled and blue-haired boy was in "Treehouse of Horror Presents: Simpsons Wicked This Way Comes" in season 36.
As the search for Milhouse's replacement is still on the search, we can tell that one of Hayden's other characters has been given a new voice. It's the school bully, Jimbo Jones, who has been one of Bart's antagonizers. While we will miss Hayden and thank her for her dedication over the years, we're excited about The Simpsons' new chapter.
Mo Collins will be Jimbo Jones from this point forward on The Simpsons

Entertainment Weekly was the first to report that Mo Collins, an alum of MAD TV and Arrested Development, will permanently take over the voice of Jimbo Jones. Her initiation into The Simpsons was season 36, episode 14, "P.S. I Hate You," aired this past Sunday, April 13.
In the episode, Jimbo was the sidekick to his girlfriend, Shauna Chalmers, as she took off with Marge Simpson's hate letters.

I thought Collins did a great job on her first episode, and I couldn't tell the difference that much. She's not the original, but she's expanding her talents into an iconic show. It's a big bottle to fill, so I'm not going to nitpick for perfection as long as Jimbo stays true to character and form.
Collins' previous credits include Family Guy, King of the Hill, Parks and Recreations, F Is for Family, Fear the Walking Dead, Disney's Spidey and His Amazing Friends, and countless others. She's known for her sketch portrayals of celebrity women during her Mad TV tenure.
In February, Joseph Gordon-Levitt fulfilled his dream of becoming a young and snappy Mr. Burns- nicknamed Monty B., in the Disney+ exclusive episode, "The Past and the Furious." While he's not taking over the voice of the beloved and deliciously evil character (he belongs to Harry Shearer), Gordon-Levitt did an excellent take on capturing his spirit.
Milhouse's new voice actor will arrive later this year and it's with hope that the producer will find a superb person to continue him. Additionally, the must have chemistry with Nancy Cartwright, who voices Bart Simpson, as he's Milhouse's best friend and chief influencer.
Otherwise, it would plain suck.