caine 100% named himself after the bible thing of cain and abel bc he essentially killed his younger sibling (blue ai), i think bubble is either one of caine's random outputs or more likely the remnants of AI2
also kinger accidentally commited filicide by killing caine since he's scratch's and his brain child thing
OMG I NEVER NOTICED THAT, he ate his brother essentially. that's so creepy omg
I feel like bubble it's an extension of Caine and his insecurities, his self doubt
ALSO????????? OMG , does it count? if Kinger is human and caine is an AI