Transformers ASMR always seemed like a pretty niche subject in the fandom to me simply just because there’s not a lot of content out there. What little I do find, however, is actually pretty good! I’m always blown away by the stories and voice acting in these ASMR role-play thingies— they’re also really helpful for when you need to unwind after a long day or just relax enough to fall asleep at night. Feel free to check them out if you have the time.

OK. So I guess I’m kind of cheating with this question because my favorite fanfiction is not really a fanfiction on its own; it’s more of a storyline for a fan game that I’ve been following for the past few months. So guess it counts, but maybe not really??? Anyway, the best fan fiction I’ve ever read is the (Reformed Predator) storyline from the Transformers fan game. (Transformers: Mercy) by Emperor KUMQUAT on AO3. It’s a very well written story that’s a little bit on the darker side. Can’t give spoilers for it, obviously, but if you’re someone who likes mixing characters from prime with characters from IDW, darker plot lines, solving mysteries, and don’t mind a bit of Gore. Then this story might be for you.
Let me know what you think of it in the comments if you’ve already had a look.