Disclaimer: I don't own Boromir, Sam, or Gandalf. You know that.
Boromir
Strengths: Is nice to little Hobbits; has a cool red cape; sword-wielding talents
Weaknesses: Has a bad little brother and crazy dad
Disorder (mental): Is obsessed with the One Ring
Favourite Food: Poptarts
Probable Cure: Frodo running away from him; his father committing suicide
Warning: Due to the cure being dangerous and against the law, we do not recommend it; therefore Boromir may have to live forever with his mental illness. We are not responsible for the actions of others who try to cure Boromir.
Samwise Gamgee
Strengths: Loyalty; gardening skills
Weaknesses: Fat; small and helpless
Disorder (mental): Feels the need to always be looking after Frodo; autophobia*
Favourite Food: Mushrooms
Probable Cure: Ceasing the consumption of mushrooms; being parted with Frodo forever and getting married may cure his autophobia
Warning: The patient will resist the cure. He may experience deep depression and loneliness for the first few years of the cure, and we cannot guarantee that he'll recover. We are not liable for any injuries caused by the patient during the cure.
Gandalf the White
Strengths: Special magic staff; resurrection; power to conjure up eagles to save the day
Weaknesses: Grumpy
Disorder (mental): Obsessed with Hobbits (thinks they're too cute); gets angry at Dwarves frequently
Favourite Food: Some bread and cheese, and a glass of wine
Probable Cure: Ceasing the consumption of all things alcoholic; ceasing smoking pipeweed; staying away from Dwarves
Warning: The patient is very temperamental. Do not engage the patient in combat if he refuses the cure. Death or serious injury can occur. Keep patient away from crazy Gondorian Stewards. The patient may injure them by hitting them on the head with his staff.
There. All done with the Fellowship. PM me if there's someone in particular you want to see, so I can make him a priority.
*AKA Monophobia, this is the fear of being alone