This chart of the Top 10 Author Graphic Novel Franchises reflects sales in both the comic store and book channels during Spring 2021 (January-April), as measured in dollars, according to ICv2’s analysis of sales reported by NPD BookScan for the book channel, and of sales reported by ComicHub in the comic store channel.  The "Author" category includes content owned by and associated with its creators.
 

ICv2’s Top 10 Author Graphic Novel Franchises – Spring 2021
Rank	Franchise	Publisher
1	Invincible	Image Comics
2	The Walking Dead	Image Comics
3	The Boys	Dynamite Entertainment
4	Ed Brubaker	Image Comics
5	The Umbrella Academy	Dark Horse Comics
6	March	IDW/Top Shelf Prod.
7	Saga	Image Comics
8	They Called Us Enemy	IDW/Top Shelf Prod.
9	Critical Role	Dark Horse Comics
10	Spawn	Image Comics

These top franchise charts originally appeared in ICv2's Internal Correspondence #100 (the "Superhero" category includes titles published by Marvel and DC, along with any other titles based on corporate-owned content, such as titles tied to movie, TV, and character licenses).

For our other Top Graphic Novel Franchise charts for Spring 2021, see:
Top 10 Kids Graphic Novel Franchises – Spring 2021
Top 10 Manga Graphic Novel Franchises – Spring 2021
Top 10 Superhero Graphic Novel Franchises – Spring 2021

For more on comics and graphic novel sales in the Spring season, and info on how to get your copy of ICv2’s Internal Correspondence, with the full market reports, charts, Pick Hits, and reviews, see "Record Spring Comics and Graphic Novel Sales."