The new series of Rick and Morty has dropped, ending fans’ speculation over who was going to be voicing the main characters in the show.

Up until now, mad scientist Rick and his grandson Morty were voiced by the same actor. But he’s been replaced, giving both characters a new sound.

The release of the series trailer last month had left fans wondering whose voices they were hearing.

Now they know it’s Ian Cardoni as Rick and Harry Belden as Morty.

Cardoni voices promos for wrestling giant WWE and Apple TV, while Belden has previously had roles in Joe Pera Talks With You and medical drama Chicago Med.

And the season premiere on Sunday night saw Rick and Morty enlist the help of X-Men Wolverine actor Hugh Jackman, a guest appearance as himself, to remove unwanted house guest Poopy.

Rick and Morty were previously voiced by co-creator Justin Roiland. He was let go after he was accused of domestic violence – the charges were later dropped.

The show’s creators said they wanted to make the change in cast seamless to create as little disruption as possible to the fan’s experience of the show.

Scott Marder, who led the search for the new voices, told the Hollywood Reporter: “The goal was always to try to preserve the viewing experience and give them [viewers] the same show they’ve had every other season.”

Fan reaction on social media to the new voices have been mixed.

“The new voices of Rick and Morty sound pretty convincing. Looking forward to the rest of Season 7,” one fan tweeted.

Another described their new voices as “weird”.