[The mental illnesses each Pasta/Proxy has]

Jeff the Killer - Bipolar Depression, PTSD, Insomnia

Laughing Jack - (extreme) Psychosis, PTSD, Persistent Depression

Eyeless Jack - Chronic Anxiety, Manic Depression

Slenderman - Psychopathy

Zalgo - Psychopathy

Jane the Killer - OCD, PTSD

Clockwork - PTSD, Bulimia, Insomnia

Sally - PTSD

Jay Merrick - Insomnia, Persistent Depression

Alex Kralie - Bipolar Depression, Acute Stress Disorder

Tim Wright // Masky - Schizophrenia, Psychosis, Persistent Depression, Chronic Anxiety

Brian Haight // Hoodie - Generalized Anxiety Disorder, Manic Depression, Psychosis

Helen - Bipolar Disorder

Puppeteer - Psychopathy, Narcissism

Homicidal Liu - Borderline Personality Disorder, Persistent Depression

BenDROWNED - Psychopathy, Narcissism, Chronic Anxiety

Kagekao - OCD, Generalized Anxiety Disorder

Ticci Toby - ADHD, Manic Depression, OCD, Psychosis (plus CIPA but that's not a mental illness)