I think Hex is this guy, LexParteVT, a twitch streamer with 20k subscribers that graduated yesterday, the voice is very similar.
Hex did tweet "voice changer," but yeah, this seems like a good guess, especially due to him having graduated. He's also followed by Scarle, Uki, and Mika on Twitter though that could be a coincidence.
His intro video is kinda cringe, he seems way more chill in his graduation video though. Kinda reminds me of a deep voice Uki. How do guys end even up with this kind of voice?
Sounds like a voice changer at times to me, especially when he laughs. Not sure, though. Also:
Timestamp: 49m38s
The other graduation that was put forward for Hex is KyrioCifer kyriocifer though in order to find his content you need to search YT for clips. I could see it being either Lex or Kyrio.