It's funny because I saw him in a video for USC RAs (he was an RA) on conflict resolution or something like that. He acted completely normal.
I've seen pics awhile back off someone's FB page (affiliated with USC) of him smiling, looking normal, with girls flanking him (like friends in his same program). He absolutely looked and seemed to act normal; if anything, perhaps a bit shy or introverted (and obviously obsessed w/ gaming) but he nevertheless seemed to have friends at USC.
When he used to be in the background of MK's vlogs, he acted normal. Just a nod here or there, a smile, etc. Honestly, I used to think he was the normal one and felt bad for him sometimes.
But then after he became a FlOriDa ReSiDEnt, that all changed (and I no longer felt sorry for him haha)
It seems like it was then that he tried to mimic MK with the Disney vlogs and food critiques, etc., he somehow developed this strange over-the-top personality with exaggerated facial expressions, repetitive phrases, useless phrases, talking in circles, etc.
I think that he wants SO badly to rise to the level of his bigger bro - who, for all his faults, he clearly idolizes to a certain extent for the free shit people throw at him, that he's created a persona that is NOT really authentic to him.
(and I don't know what the hell to make of Gem and Havoc and the Squirrel music video outside of pointing to my prior stated belief that Mommy always told him everything he did was perfect and wonderful... )