- Script
- Mark Evanier
- Pencils
- Sergio Aragonés
- Inks
- Sergio Aragonés
- Letters
- typeset
- Genre
- humor
- Characters
- Groo; Rufferto
Inside front cover introductory text with illustration, credits and indicia information
- Script
- Sergio Aragonés (co-plot); Mark Evanier (co-plot & dialogue)
- Pencils
- Sergio Aragonés
- Inks
- Sergio Aragonés
- Colors
- Tom Luth
- Letters
- Stan Sakai
- Genre
- humor
- Characters
- Groo; Rufferto; King Ravenus; Anakrony
- Reprints
Division of writing credit from Mark Evanier via the GCD Errors list, September 2009.
- Script
- Mark Evanier
- Letters
- typeset
Letters from: Donnie Neiswinger, Mike Slaubaugh, Scott G., Jeff Allen, Phillip Bruhat and Joe Toberon.