- Old Shame: The Comico black-and-white miniseries, as well as the character's introduction in Comico Primer #2.
- To an extent, Wagner feels this of his original concept of even Devil By the Deed, what with the line about Grendel being the spirit of society's mediocrity.
- Screwed by the Network: The title saw a delay of several years due to the bankruptcy of its original publisher (Comico). During the interim, Comico's owners tried to claim Grendel as a company asset and prevent Wagner from taking the character elsewhere. This also held up Dark Horse reprints of the Comico issues, which eventually went through without further complications.