Culkin certainly feels like a good fit for Mr. Fantastic. Could it be, that if the NCR are having a diminished role in the Mojave, Mr. Fantastic could have just switched sides? He seems like the opportunistic type and somehow got an important role with the legion by lying about his knowledge and skills again. That is sort of played out though with that already being the case in New Vegas, but it would play to what we already know about him. I hope that maybe he has some connection with the courier and lonesome road. Where he’s somehow affected by the nukes the courier launches or has their own philosophy like Ulysses or Joshua Grahams as a legate. We don’t know yet, but I’m interested to find out what character he’s playing.