oh the static/noise one
he'd become a bit blank, but would be very drawn to radios, white noise, crt tv static, basically anything old technology based
he might end up becoming like a cutesy yet hangry person, except on a extreme level
like, as long as he's not hungry, he's basically a very loyal and protective person, but when he is hungry, he becomes a cannibalistic sociopath
hold on, i just looked it up, it'd basically make him have multiple personalities (fitting it's whole multiple face thing), making him quite unpredictable
fun fact, the reason why this guy seems to take on the personality of the E.G.O he wears is because of a special trait; i call it "attunement", where he attunes to the E.G.O essentially making it stronger, but at the same time making him act more like the abnormality that the E.G.O belongs to