Robert Charles is listed in the credits for the following albums:
| Year | Artist | Album | Role |
|---|---|---|---|
| 1990 | Take 6 | So Much 2 Say | Second Engineer |
| 1999 | Scarecrow & Tinmen | No Place Like Home | Additional Engineer |
| 1999 | John Elefante | Defying Gravity | Assistant Engineer |
| 1999 | The Darins | Darins | Assistant Engineer |
| 2000 | Sierra | Change | Assistant Engineer |
| 2002 | Sheila Walsh | The Hymns Collection | Assistant Engineer |
