Atmosheroian

 is a gender associated with the atmosphere or "vibe" of comic book superheroes.

Etymology
Prefix "atmos" from "atmosphere". Root word "hero" with common gender suffix "-ian"

Definition

 * A gender associated with the atmosphere or “vibe” of comic book superheroes. This could include things like camp/campiness, puns, banter, and other aspects of superhero mannerisms and atmosphere! - neogenders, 2020

History
On June 10, 2020, Tumblr user neogenders coined the term Heroian and its subsets, including Atmosheroian. A few days later, on June 16, 2020, neogenders posted his Heroian flag, along with a flag for its sibling term, Villainic.

Gallery
Tumblr user neogenders has stated that his Heroian flag, pictured above, can be used for the three subsets of Heroian mentioned in his coining post - Aesheroian, Atmosheroian, and Morheroian