They said: “We had already finished season four, and the writers are working on season five in two-hour blocks through Zoom.”
Fans are wondering whether Waititi will return to voice different characters in future, and there is a possibility he will be brought back.
Upcoming cameos could even include Kanye West, as Roiland announced they would love to work with the superfan.
They told Consequenceofsound: “It’s not going to be for this batch coming up. But we love the idea of doing something with him.
“It’s just a discussion of what exactly that is, and then sitting down and talking with him. He had to reschedule, and then we had to reschedule.
“We need to sit down and chat about it. But it’s a very sincere and legitimate offer when we threw that out.”
Rick and Morty season 4 is available to watch on Netflix now