While he was using the Jack account, he sounded like stereotypical edgy gamer-kid who's often surrounded by cans of Mountain Dew and Monster Energy and bags of Doritos, all while playing Call of Duty and screaming racial slurs into the voice chat.
I dunno. That's just the image that pops up in my head while thinking about the Jack account.
However, under his other accounts, he sounded like a spoiled child who lives in the suburbs and spends way too much time on his mom's iPhone.