[5] In early 2008, he launched a fantasy webcomic with artist Chuck Fiala called Sword & Sarcasm.

[6] In 2008, he wrote the Dark Horse comic-book adaptation of Indiana Jones and the Kingdom of the Crystal Skull.

[10] On September 23, 2024, During an interview on the Epic Realms Podcast Miller spoke about how he had gotten the go ahead to write the Batman: Resurrection novel from having seen the Burton movie multiple times in the theater upon its release.

[12][13] In 2005, Miller wrote a one-shot issue of Star Wars: Empire for Dark Horse Comics, featuring Darth Vader as the main character.

In August 2008, Wizards of the Coast released a Knights of the Old Republic guidebook for its Star Wars Roleplaying Game, which Miller co-wrote.

Following Dark Horse changing the format of their series, it is not ongoing, but instead published as independent story arcs, separated from each other by several months.