Tigger from Winnie the Pooh suffered from Attention-deficit/hyperactivity disorder (ADHD)
Elsa, the Ice Queen, the sister with magical power from Frozen suffered from Major depressive disorder. She was unable to control her emotions which later hurt her younger sister Anna.
Scar from The Lion King grew up in the shadow of his brother Mufasa, the King of Jungle. He suffered from Antisocial Personality disorder (APD)
Belle, the beautiful princess from Beauty and the Beast is an extremely intelligent lady who loves to read but was imprisoned by a mean beast to free her father. She suffered from Stockholm disorder which means a victim forms an emotional bond with the abuser.
Ariel from The Little Mermaid clearly has signs of Obsessive Compulsive disorder (OCD), where she is obsessed with collecting useless things.
Tiana from The Princess and the Frog turns into a frig after she kisses a frog prince. She suffered from Zoophilia which is a sexual disorder involving attraction to animals or desires to have sexual contact with animals.
Maleficent, the evil lady from Sleeping Beauty is one of the evilest characters of Dinsey. She suffered from Borderline personality disorder (BPD) which means a person has inappropriate or extreme emotional reactions, is highly impulsive and has a history of unstable relationships.
Jaffar from Aladdin is surely the standard villain for all of us, suffered from Antisocial personality disorder (APD)
Alice from Alice in Wonderland clearly suffers from Schizophrenia whihc is a serious mental illness that interfers an individual's ability to thi k clearly and manage emotions.
We all love Charlie Brown from Peanuts suffered from Avoidant personality disorder (APD) which means feelings of extreme social inhibition, inadequacy and sensitivity to negative criticism and rejection.