Rick and Morty Crashes Comic-Con at Home Panel: Watch ✖ Rick and Morty. This panel featured not only co-creator Dan Harmon and showrunner Scott Marder, but members of the cast as well with Sara Chalke (the voice of Beth), Spencer Grammer (the voice of Summer) and Chris Parnell (the voice of Jerry) all in attendance. But one thing fans didn't expect to see was Rick and Morty themselves. Towards the end of the panel, Rick and Morty themselves suddenly made an appearance with a phone call (with co-creator Justin Roiland voicing them, of course) in which Morty complains about how late the two of them are thanks to Rick making Morty dig lots of holes for some reason. Begging moderator Brandon Johnson (who provides a number of voices for the series) to do one of his voices, it was a hilarious pop up of the duo at the tail end of an eye-opening panel. Check out the cameo as spotted and shared by @swimpedia on Twitter: