Review of dwarf attributes.

Happy

Downside: Over-optimism.
Upside: Positive attitude.
Rating: ⚒⚒⚒⚒⚒⚒⚒⚒⚒⚒

Doc

Downside: Not clear what attribute is. Seems to require spectacles.
Upside: Might be knowledge, perhaps a doctorate.
Rating: ⚒⚒⚒⚒⚒⚒⚒⚒

Bashful

Downside: Difficulty expressing needs, feelings.
Upside: Some people find it charming.
Rating: ⚒⚒⚒⚒⚒⚒⚒

Grumpy

Downside: Negative attitude makes everyday life more difficult.
Upside: Teenagers and the elderly identify with you.
Rating: ⚒⚒⚒⚒⚒⚒

Dopey

Downside: Total incompetence.
Upside: Babylike charm.
Rating: ⚒⚒⚒⚒

Sneezy

Downside: Annoying to others; perpetual state of poor health.
Upside: Better than being Itchy or Snotty.
Rating: ⚒⚒

Sleepy

Downside: Incapable of remaining awake to perform functions.

Upside: None.
Rating: ⚒

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It is not generally known that the Seven Dwarves of Disney fame were actually representatives of seven larger and more specialized tribes, brought together in the house in the woods for their mining expertise. Here's a list of the tribes and their original members. 

Doc, Prof, Teach, Smarts. Physician, Engineer, Specialist

Happy, Loopy, Wacky, Merry, Silly, Cheerful, Hysterical

Sleepy, Drowsy, Woozy, Snorri, Groggy, Lazy, Drunk

Sneezy, Itchy, Headachey, Spotty, Feverish, Sickie, Rashy

Grumpy, Grouchy, Surly, Crusty, Testy, Nasty, Antisocialy

Bashful, Shy, Introverted, Maladjusted, Wary, Scaredy, Agoraphobe

Dopey, Stupid, Idiot, Clown, Ding-Dong, Dummy, Moron