Okay, so, if you have read the first line of this story's description, you will know that Peppa is in fact, in this story, a grown adult female, a human. 

Her parents will be Vernon and Petunia Dursley, her brothers will be Harry and Dudley Dursley.

Now, on to the list of characters. (You may, of course, skip all of this as it is not necessary to the plot).

Character One:
Name: Peppa LePigg (she changed her name as she is a designer for a major clothing company/brand)
Age: Twenty-three
Occupation: Clothes designer
Appearance-
Hair colour: Light pink. (a chalk-ish sort of pink)
Eye colour: Brown
Average height and weight for an average twenty-three year old female

Character two:
Name: Dolores Jane  Umbridge
Age: Thrity-five
Occupation: English Politician for Fudge Labor Party
(will become an executive for Fudge & Co. Sweet Treats as the story progresses.)
Appearance- (I have altered Umbridge's appearance slightly)
Hair colour: Light brown
Eye colour: Brown
Average height and weight for an average thirty-five year old female.

Character three:
Name: Cornelius Fudge
Occupation: Ex-politician, now the proud owner of Fudge & Co. Sweet Treats.
Appearance-   
Hair :Brown hair that is mostly grey
Eye colour: Blue
Weight: A little bit overweight, nothing major though 
Height: The average height for a middle-aged man of his stature 

Character four: 
Name: Harry (or Harold/Harrison, both work) James Dursley
Occupation: Worker at his father's drill company 
Appearance: 
Hair: messy, black hair that one could mistake for being of the 'curly' nature. No, scrap that, Harry does that curly hair in this story / book.
Eye colour: Green (staying true to the books, fellows)
Spouse/partner: Undecided, although he has had quite a few relationships. 

Character five: 
Name: Dudley Vernon Dursley (the middle name is not canon, as far as I know/am aware).
Occupation: Worker at his father's drill company (as well as part time skater boy)
Appearance-
Hair: Tidy, neat blonde hair 
Eye colour: blue
Spouse: Not confirmed. Although he has been rumoured to be in a relationship with Ronald Weasley.
Celebrity status: Son of a well-known public figure 
Family ties/relations: 
Father: Vernon Dursley
Mother: Petunia Dursley
Twin Brother: Harry Dursley 
Sister: Peppa LePigg (originally born Dursley)
Aunt: Marjorie Dursley 
Uncle: Jarvis Pooter
Aunt: Lilian Pooter
Cousin: Morstar Pooter
Cousin #2: Servus Namarus (Son of Marge)
Cousin three: Delonna Parsden (son of Jarvis, from a previous marriage)
Cousin four: James Theodore Leopold  Albert V (son of Lilian and James, youngest born)

Lilian Pooter -
Nationality: French
Age: thirty-three
Occupation: Defence attorney

(More to be added as the story progresses)

Also, if you couldn't tell, this is a joke.