Both him and his brother are weirdos. Something not quite right with either of them, maybe it'll come out in years to come.
Sunny, despite all the rubbish, does appear to have his head screwed on to a degree and knows when he's being a bit of an idiot. Charlie, on the other hand, is so blissfully unaware of what an absolute tool he is, it's like he's becoming a parody of himself, at least we might get treated to seeing him take another beating again soon.