Responses
Okay I did some light research and [SPOILERS WARNING]
[bitch you've been warned]
He indeed has some genuine psychological problem due to his Miller blood. In fact all the Miller siblings has some sort of psychological or behavioural problems due to their genes.
What's even crazier is that psycho brother Grayson actually turns into a longing puppy green flag top. Like bruhhh the whiplash of the change.
Bruh, apparently Chase's bitchass psycho brother has a spin-off. Like bruh??? I wanted this mf dead tf. The only thing that will make me not want him dead is that if it gets confirmed that he's legitimately not okay in the head. Like he SERIOUSLY and GENUINELY thought he did what was best for Chase, because his brain is like literally fucked up like that, and not because he was being malicious to Chase.