This article is from the Polyamory FAQ, by firstname.lastname@example.org (H. Wilper) with numerous contributions by others.
Love and Rockets comic books have a poly/bi accepting story line
written by Jaime Hernandez
Omaha the Cat Dancer and ElfQuest comic books also have main
characters that are frequently or occasionally involved in polyamorous
There was a comic in the Kerista newsletters called "Far Out West"
some of these have been collated into a comic called, "Polly Morphus
in FAR OUT WEST".
_Whom Gods Destroy_, a DC Elseworlds graphic novel which features
an alternate earth where,the Nazis are still in power, Superman never
aged, and Lois Lane and Lana Lang got old. In the end, when the
adventure is finished, the three profess to love one another and then
live in polyamorous cohabitation.
Shade: The Changing Man has a plot thread involving the title
character and two women (Kathy and Lenny)