In comics, they have written several graphic novels and miniseries for independent publisher Oni Press, including Skinwalker, Three Strikes, Maria's Wedding, The Tomb, Once In A Blue Moon the Amy Devlin Mysteries, Frenemy Of The State (written with Rashida Jones), and the upcoming Bad Medicine.
More favorably, Aaron Sagers of the newspaper The Morning Call saw Gravemind as a perfect example of a trend in pop culture called a "frenemy".
•
More positively critic Aaron Sagers used Gravemind as an example of a "frenemy" — the creature's appearance made the Master Chief's fight against the Flood more personal and more dramatic.