Pract16ice wei16rds p16owers!16
Cross sans and chara. they here. i actually know a bit of their lore because i asked bri like, RIGHT before i made weird sans. so im pretty sure the backstory is that Gaster wants to make a perfect AU so he resets them everytime its not perfect. he's like every creator ever, torturing and killing their ocs for the ultimate juicy story. after that, im not sure... i think they're on a mission to destroy him, so they're killing whoever most inspired Gaster for vengeance and also for enough LOVE to defeat him.
i think Chara is the driving force behind this. i also think theyre a ghost and nobody can see them except for Cross. their souls merged at some point when Chara died. Cross just wants to live a normal life, but listens to Chara because he beleives this is the only way to get one. they both are serious and stoic, but cross has more empathy than Chara. BTW theyre twins. like me hehe