Ketchup
Ketchup is a toy character in the game Okaeri! Chibi-Robo! Happy Richie Ō'so'ji! He lives in the backyard and gives Chibi-Robo the Ketchup costume, which comes with a guitar Chibi-Robo can play.
Ketchup tends to a tomato garden in the backyard. His music is meant to help them grow.