Sheyo was a member of Magna Tolvan's crew, serving under Captain Magna Tolvan within the ranks of the Rebel Alliance.
Although Sheyo's identity was initially unknown, their initial appearance occurred in the thirty-sixth issue of the 2020 comic book series. This issue, penned by Alyssa Wong with illustrations by Minkyu Jung, was released by Marvel Comics on September 27, 2023. Subsequently, Sheyo's identity was revealed in the thirty-seventh issue of the same comic series, also authored by Wong and published by Marvel on October 25, 2023. Wong later verified on Twitter that Sheyo was the Devaronian character depicted in the comic series.