Final answer:
Edgar Allan Poe earned the nicknames "The Tomahawk Man" and "The Comanche of Literature" for his fierce and uncompromising criticism of other writers and their works.
Step-by-step explanation:
While working as a literary editor, Edgar Allan Poe earned the nicknames "The Tomahawk Man" and "The Comanche of Literature." These nicknames were a result of his fierce and uncompromising criticism of other writers and their works. Poe was known for his direct and cutting reviews, often attacking the work of other authors with a harsh and brutal honesty. His critiques earned him a reputation as a relentless and fearless critic, hence the nicknames.