Ruth ended up the most frequent character on Seinfeld (1989) besides the main four, due to that she was present in basically every scene at Monks diner from the season 4 opening episode until the end, although not always seen on camera, depending on what camera angles where used in the diner. She however only received on-screen credits two times, when she had a couple of lines of dialogue during the last seasons (three times in total). She finally ended up visible in 101 episodes.