okay so, this hc literally came to me after scrolling through your tumblr for a good few hours lol. i think that maybe billy had a younger sister that also died as well as his mum (in a car crash or something) and neil blamed billy for their deaths. after this neil got more violent towards billy and is why neil is so protective of max and why billy is so adamant that max is his step sister...
this head canon is liquid pain what are you doing lol. on the other hand…it would be interesting re: max… especially the part about “she’s not my sister…I HAD A SISTER AND SHE’S DEAD.”
god, you people are monsters lmao.