Invincible season 4 aired earlier this year and saw the return of several major characters. However, fans were left a bit confused when one of the main cast members didn't return to voice William Clockwell, Mark Grayson's loyal best friend.
Girls star Andrew Rannells was the original voice actor, starring in the show for the first three seasons. However, in the fourth outing he was replaced by comedian Brandon Scott Jones. Now it turns out that Rannells isn't sure why he wasn't asked back.
"I'm not exactly sure why," he explained to The Direct when they quizzed him on the recasting. "I think there was maybe a little restructuring and they... I was a guest star, and there were a lot of guest stars that didn't end up coming back for the fourth season. So I'm not exactly sure why, but I was happy to be a part of the first three."
Rannells isn't wrong as several other guest stars didn't return in Invincible season 4 either. Heroes star Zachary Quinto was recast with Ross Marquand as the voice of Robot. Meanwhile Hamilton star Jonathan Groff also didn't return as Rick Sheridan with Luke Macfarlane instead stepping in.
Invincible season 5 has already been confirmed but it's not yet sure if Rannells – or indeed any of the other voice cast – could be returning for that. What we do know is that Breaking Bad star Aaron Paul will be back and there will be some more "side quests" in the new season too.
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