Here are the theme songs for Rocko's Modern Life Characters:
- Rocko - ???
- Heffer Wolfe - ???
- Filburt - ???
- Mr. Bighead - ???
- Mrs. Bighead - ???
- Dr. Hutchinson - ???
- Chuck and Leon - ???
- Ralph Bighead - ???
- Peaches - ???
- Really Really Big Man - ???
- Sheila - ???
- Alicia - ???
- Gladys Hippo - ???
- Claudette - ???