Mentioned, yet unseen characters in Rick and Morty.
“Mrs. Sanchez is the ex-wife of Rick Sanchez, the mother of Beth, the mother-in-law of Jerry...Mrs. Sanchez
“Coach Feratu is an unseen character that was mentioned in the episode Big Trouble In Little...Coach Feratu
“Katherine Heffelfinger is an unseen girl that was mentioned in the episode Interdimensional...Katherine Heffelfinger