The first 21 issues were eventually reprinted alongside the Sonic's Friendly Nemesis miniseries in the Knuckles the Echidna Archives series of graphic novels, which ran from 2011 to 2013.

However, due to demand from readers, Archie chose to turn The Dark Legion into a full comic series, changing its title to Knuckles the Echidna by issue #4.

Knuckles himself is a member of the Brotherhood of Guardians, an ancient organization dedicated to preserving echidna culture and protecting the Floating Island.

Their main adversaries are the Dark Legion, a rogue faction of echidnas obsessed with intellectualism, weapons and cybernetic implants.

Other major plot threads include encounters with other echidna civilizations around Mobius, a conspiracy of poisoned food being sold on the Floating Island, Knuckles' affiliation with the Acorn royal family from the surface of Mobius and sinister forces attempting to steal the power of the Chaos Emeralds, powerful gemstones that keep the Floating Island aloft.

Many of the series' elements have been met with bewilderment, including its tonal inconsistency, complicated dialogue and extremely blunt political allusions, all while being aimed at children who might be unable to comprehend said aspects properly.

[7] In 2024, Penders published The Lara-Su Chronicles: Beginnings, a graphic novel containing a reprint of "Mobius: 25 Years Later" alongside "The Storm", an original story featuring characters from the Knuckles series.

[8] In the book, "Mobius: 25 Years Later" is given a new ending, revealing that the main characters' actions in the storyline resulted in major changes to the series' fictional universe.