Justin Roiland’s swift dismissal from Rick and Morty (as well as the rest of his multimedia empire) earlier this year immediately raised questions about whether the series might be in jeopardy. Fans / aspiring voice actors were all too ready to burp out their best “oh, geez,” and Adult Swim assured everyone that it had a plan. But it was hard to imagine the show continuing without the voice behind its titular duo and so many other of…