| Issue | #20 |
| Published | October 1986 |
| Cover Price | 0.75 |
| Pages | 36 |
| Editing | Archie Goodwin; Jo Duffy (associate) |
| Pencils | Sergio Aragones |
| Inks | Sergio Aragones |
| Colors | Tom Luth |
| Reprinted | in Groo Expose, The (Marvel, 1993 series) #[nn] |
| Characters | Grooella |
| Synopsis | Groo again tries to help his sister regain her kingdom |
| Script | Sergio Aragones (co-plot); Mark Evanier (co-plot & dialogue) |
| Pencils | Sergio Aragones |
| Inks | Sergio Aragones |
| Colors | Tom Luth |
| Letters | Stan Sakai |
| Notes | Division of writing credit from Mark Evanier via the GCD Errors list, September 2009. |
| Reprinted | in Groo Expose, The (Marvel, 1993 series) #[nn] |