User blog comment:X9 The Android/PE Proposal: The Batman Who Laughs/@comment-4708882-20190928153530/@comment-2059440-20190928223041

Scar was a psychopath before he got the Snake Venom btw.. Scar was born that way.. Batman? not so much.. Batman's insanity was specifically stated to be due to poison : Scar already had a pathological disorder, the venom just made him more able to embrace it.