Seren
Main Character
Smart: 9/10
Strength: 6/10
Age: 14
Looks: 10/10

Zack
Second Main Character
Smart: 4/10
Strength: 10/10
Age: 15
Looks: 9/10

Charlie
Seren's sister
Smart: 10/10
Strength: 1/10
Age: 14
Looks: 4/10

Carl
Seren's dad
Smart: 10/10
Strength: 10/10
Age: 42
Looks: 0/10

Carol
Seren's mom
Smart: 7/10
Strength: 1/10
Age: 56
Looks: 2/10

Mia
Seren's best friend
Smart: 0/10
Strength: 0/10
Age: 13
Looks: 8/10

Max
Mia's boyfriend
Smart: 10/10
Strength: 10/10
Age: 15
Looks: 10/10

Angela
Seren's bully
Smart: 0/10
Strength: 0/10
Age: 17
Looks: 0/10

Mrs. Jackson
The principle
Smart: 10/10
Strength: 10/10
Age: 20
Looks: 10/10

Blossom
Seren's cat
Smart: 10/10
Strength: 10/10
Age: 0.8 (cat years)
Looks: 1000/10

Any other characters not mentioned aren't important or only are in the story for a single chapter (or paragraph).