He comes from a warlike people who believe in honor above all else, including life. On his home planet, he was an archivist and a non-combatant by choice. When raiding parties from his world to the neighboring Xanshi were overcome by the local resident Green Lantern Reever, he made it his mission to defeat the enemy using his own knowledge.
After defeating the Lantern in single combat using a yellow warsuit, he found himself selected to be the new Green Lantern of his sector. As was the custom of his people, he ate Reever's remains to honor him as a worthy opponent. Then, in an effort to bring the senseless war in his region to an end, he established himself non-violently in a position of power on both planets.
The final mission of Arkkis Chummuck was against Maaldor, a being that escaped from an inter-dimensional prison, who had captured several Guardians and stolen the power of the Central Power Battery. The last surviving Green Lanterns with working power rings were Arkkis, Tomar-Re, Katma Tui, Arisia, Xax and Ch'p. Each only possessing limited power, they decided to pool their energies into Chummuck, and he made a suicide run against Maaldor. There was a gigantic explosion as the energies collided, and neither of them apparently survived, as no bodies were found. However, Maaldor would reappear later during the Crisis on Infinite Earths.
Despite the lack of a corpse, Arkkis Chummuck was memorialized in the Crypts of the Green Lantern Corps along with all of the other Fallen Lanterns. During Blackest Night, he was resurrected on Oa as one of the many members of the new Black Lantern Corps.
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