I will post a little bit about a character from movie, television series, book or game. You guess who it is!

First:
This character is male. Once drank a liqor store. Loves burgers (once at them by the hundreds) and used to love PB&J sandwiches. Wore a trench coat, tie, shirt and pants.

Maria from Sound of Music?

Correct!

Male

Dressed in leather jacket and jeans and frequently combed his hair.

Fell in love with an Australian girl while on vacation, then had a surprise reunion with her later.

Acted aloof and "cool" around his friends so they wouldn't see his softer side.

Had a fast car that he raced.

Was a fantastic dancer and won a trophy.

Was a jerk, but turned out great in the end.

Danced with a large crowd of people at a fair before departing with his girlfriend.

oh um um um um mm m umum ugh what's his name

DANNY - Grease

The australian girl part caught my attention

Correct!

Animated Male

Stole money from rich people

Best friend was taller than him and named John

Fell in love with a rich maid

Impressed her using his legendary skill in archery

Came to the aid of poor villagers who were locked up as punishment for being poor

Defeated the bad guys

Married the rich maid

Lived happily ever after

Robin Hood (the animated Fox)

Female; was named for a flower;

poor but beautiful;

caught the eye of a prince, who is friends with a six-fingered man; 

was in love with local "farm boy" who went off to seek his fortune and never returned;

kidnapped by a Siscillian, giant, and Spaniard

rescued by her sweet -- the man in the mask

rode off into the sunset and shared a kiss with him, a kiss so passionate and pure that, since the invention of the kiss, left all previous passionate and pure kisses behind....

Who am I?

Buttercup from The Princess Bride!

Female

Cut her hair

Dressed as a man

Joined the army

Beat the bad guys with her friends

Saved her country

Got married