Arthur Weasley : 70 yrs old ; Head of the Misuse of muggle Artefacts Office;
Molly Weasley : 70 yrs old ; Full-time grandma (JK) ;

Bill Weasley : 50 yrs old ; Curse-breaker ;
Fleur Delacour-Weasley : 45 yrs old ; Part-time at Gringotts ;
Victoire  Delacour-Weasley : 20 yrs old ; Ex-Ravenclaw ; Healer-in-training ;
Dominique Delacour-Weasley : 16 yrs old ; Ravenclaw ;
Louis Delacour-Weasley : 13 yrs old ; Hufflepuff ;

Charlie Weasley : 48 yrs old ; Dragonologist ; (oh and his life partner: Dragons 🙂 )

Percy Weasley : 45 yrs old ; Department of Magical Law Enforcement (DMLE) ;
Aubrey Weasley: 44 yrs old ; DMLE ;
Molly Weasley II : 18 yrs old ; Ex-Gryffindor ;
Lucy Weasley : 15 yrs old ; Ravenclaw ;

George Weasley : 42 yrs old ; co-owner of WWW (Weasley's Wizard Wheezes) ;
Angelina Weasley : 43 yrs old ; co-owner of WWW ;
Fred Weasley II : 18 yrs old ; Ex-Gryffindor ;
Roxanne Weasley : 13 yrs old ; Slytherin ;

Ronald Weasley : 40 yrs old ; Auror ;
Hermione Granger-Weasley : 41 yrs old ; DMLE ;
Rose Granger-Weasley : 14 yrs old ; Gryffindor ;
Hugo Granger-Weasley : 12 yrs old ; Gryffindor ;

Harry Potter : 40 yrs old ; Head Auror ;
Ginny Potter : 39 yrs old ; Senior Quidditch Reporter for the Daily Prophet ;
Teddy Lupin : 22 yrs old ; Ex-Hufflepuff ; Auror
James Sirius Potter : 18 yrs old ; Ex-Gryffindor ;
Albus Severus Potter : 14 yrs old ; Slytherin ;
Lily Luna Potter : 12 years old ; Ravenclaw ;

Neville Longbottom : 40 yrs old ; Herbology Professor ;
Hannah Longbottom : 40 yrs old ; Landlady of the Leaky Cauldron ;

Rolf Scamander : 41 yrs old ; Department of the Regulation & Control of Magical Creatures ( DRCMC );
Luna Scamander : 39 yrs old ; DRCMC ;
Lorcan Scamander : 12 yrs old ; Hufflepuff ;
Lysander Scamander : 12 yrs old ; Ravenclaw ;

Draco Malfoy : 40 yrs old ; Healer ;
Astoria Malfoy : 38 yrs old ;
Scorpius Malfoy : 14 yrs old ; Slytherin ;

This is the end of introductions!