wont make to many assumptions but ig we now know the basic lore to this version of xeno. school kid who was bullied and was looked at as something far below human. my guess for how he became xeno was most likey suicide due to the bullying and his soul became a vengeful spirit, tormenting those who wronged him. (my theory one of the reasons for his bullying was mabey he was a sonic fan and would always play the games to forget about his troubles before the bullying took its toll) it seems like also that he got his revenge, but didnt find any joy from it seeing as how it didnt make him less alone than he already was in his human life.
holy shit bro the intro is 3 minutes long....this shit boutta be a peak song though ngl (this is like the first time I seen bf with a different hat too)