Trivia / Metalocalypse: Army of the Doomstar

• Celebrity Voice Actor: Much like the original series it contains quite a few famous voices, particularly from the music industry. Having both returning faces like Mark Hamill, King Diamond, and Jon Hamm as well as a few newcomers like Amy Lee and Thundercat.
• Content Leak: The poster was accidentally leaked by Google on June 2nd, 2023 a whole nineteen days before it was officially unveiled, where it quickly spread throughout the fandom on social media.
• In Memoriam: Is dedicated to Jon Schnepp who passed away five years before the film's release
• The Original Darrin: Tommy Blancha finally returns as Murderface, Toki, and Rockzo after being absent from Doomstar Requiem and temporarily replaced with Small as his Non-Singing Voice.
• The Other Darrin: Juliet Mills replaced Samantha Eggar as the Whale due to the latter retiring from acting shortly after Season 4 aired.
• Saved from Development Hell: Has gone down in [adult swim] infamy for this, starting life as a six-part miniseries that was turned down by the network, along with canceling the series in 2015. They were also not swayed by fan campaigns, even going as far as to live stream fan petitions being put into the garbage. At first Brendon Small accepted the loss, even putting out a concept album that served as a Serial Numbers Filed Off version of the planned final album. However in 2021, Army of the Doomstar would be greenlit as a movie alongside other direct-to-video films based on [adult swim] properties such as Aqua Teen Hunger Force and fellow Cut Short series The Venture Bros..
• Sequel Gap: Requiem, the previous episode/movie, was released on October 27, 2013. Meanwhile, Army was released August 22, 2023, almost ten years later. Initially, Army was pitched as a six-part miniseries, but the series was canceled in 2015. It took Army being Saved from Development Hell before it finally came out.
• What Could Have Been:
  • Most notably there are some differences between the film and the version sneakily added to Galaktikon II: Become The Storm:
    • The lyrics of "My Name Is Murder" speaks of a "ghost viking ship in flames" alongside the "soldiers with no names" implying that The Tribunal's assault on Dethklok was originally going to be at Mordhaus rather than Deus Keep.
    • The track "Nightmare" is from Salacia's point of view, and gives details about a backstory that aren't addressed in the final film.
  • Outside of Galaktikon, Brendon Small did confirm in interviews that some scenes were cut for time such as older drafts containing more interactions between Toki and Skwisgaar.
  • Also Toki and Abigail.