I'm the one that added "(Awesome Cod)" to the characters. Characters from large fandoms like Marvel have a tendency to wander. In exchanges to prevent this you disambiguate the tag by putting the fandoms in parenthesis. AO3 tag wranglers have been associating the disambiguated versions of characters with other parts of fandom, causing them to still wander. I've gotten annoyed with trying to come up with variations of the fandom that haven't been disambiguated so I've begun to use ridiculous fandoms. Just pretend that "Awesome Cod" says "Agent Carter".