The Bunny Isabelle represents DeMille, the main playable character of Tomato Adventure who features a yellow color scheme and wears a helmet with bunny ears.
The stage represents the Ketchup Kingdom, the main setting of Tomato Adventure which takes place on a large island similar to Super Mario World.
The music track represents the battle theme of the Mario & Luigi series, which serves as the spiritual successor of Tomato Adventure developed by AlphaDream.
The Maxim Tomato item references how Tomato Adventure is centered around the theme of tomatoes.
