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From Heroes Wiki

The following categories relate to the official graphic novels, uploaded onto the NBC Heroes site after each new episode.

It's not yet clear to what extent the episode writers take into account the events depicted in the graphic novels, and thus how much weight should be accorded them as canonical sources. So far, however, most have been largely supplemental to the televised episodes.

The Heroes Graphic Novels
Abilities	Characters	Groups	Issues

Locations

Places