remus hides his intelligence behind this act of being loud and obnoxious, because if you're loud enough, people won't look closer. this allows him to scheme and implement plans and no one is any wiser because lmao remus? smart? you're kidding right? and that is how he operates. he operates under the assumption that no one is looking deeper at him. no one is going to look at remus and think he's the mastermind behind anything. it is a method of deception, almost certainly learned from janus.

roman hides his insecurities behind this act of being loud and obnoxious, because if you're loud enough, people won't look closer. he can hide how he's feeling behind a smile, a laugh, a song, and he does. he's an actor, for god's sake. we've seen roman drop the act a few times, most notably in redux, because his feelings were just too strong to hide behind some bravado. before all of this stuff with janus and remus coming out of the woodworks, no one was going to look at him closer. all he had to do was play the role and he could continue to mask how he's feeling. it is a method of self preservation, because he doesn't feel his real feelings matter in the long run.