I'm super sorry, but even if she doesn't say it aloud it's like, she's still recognizing them as characters from fiction? And it's possible that it might not come up later, but then again at the same time it could. I don't usually have anything against 4th walling if it's just my own dude, but 4th-walling him would 4th-wall like five other characters (and any future cast-mates), and it seems kind of douchey on my part to go YEAH GO RIGHT AHEAD if one of them wouldn't be cool with it.

So yeah I'm really sorry but I gotta decline; I really appreciate you asking me though! I know it's a super huge pain in the ass to avoid this kind of stuff, especially if the character is a fan of a particular series. Trust me bro I feel your pain.