I don't have enough context to determine exactly who 'garp' is. It could be a newly created character by the fanfic writer, or it might be a character from a relatively unknown story that is being incorporated into the 'ace fanfic'.
As far as I know, Roger Ailes has no connection to erotic fiction. He was involved in building a significant media empire and had a major impact on the political and media landscapes in the United States. His story is more about media strategy, power plays, and political influence, not something related to the genre of erotic fiction.
In Star Wars fanfiction, 'Roger Roger' can be used to set the mood. If a story is set in a droid - heavy environment, using this phrase helps to build the atmosphere. For example, in a story about a droid repair shop, the droids might say 'Roger Roger' when receiving instructions on repairs. It also helps to distinguish the droids from other characters in the story, as it is a very specific form of communication associated with them.
In Star Wars fanfiction, 'Roger Roger' is often used as a nod to the droids in the Star Wars universe. It's a way of mimicking the somewhat robotic communication style. It can be used to add a touch of authenticity to droid - related scenes or interactions in the fan - created stories.
Well, in the world of Star Wars fanfiction, 'Roger Roger III' could be a really unique creation. Maybe it's a new type of protocol droid that has some special abilities or a backstory that ties into the existing Star Wars lore in an interesting way. It could be that the author wanted to create a character that adds a new element to the Star Wars universe, perhaps a droid with a sense of humor or a different kind of loyalty compared to the well - known droids like C - 3PO or R2 - D2. But again, we really need to look at the specific fanfiction to know for sure.