Ruthie Cohen is a cashier at Monk's Cafe. She has the fifth-most appearances of any character on Seinfeld, behind only Jerry, Kramer, Elaine, and George. She was the cashier in almost all of the episodes and features most prominently in “The Doll”, with most of her speaking lines coming in Season Eight. She also was featured outside of Monk's in “The Gum”, which also featured her talking. The character was one of three eponymously named characters to play in multiple episodes, the others being Jerry Seinfeld and Keith Hernandez. Ruthie Cohen was portrayed by the late Ruth Cohen, after whom the part was named. Actress Ruthie Cohen died in 2008 at the age of 78.