Ronald Stoppable
Age 17
Family: Dean Stoppable (father) Alice Stoppable (mother) Hana Stoppable (adopted younger sister) Jason Lee Scott (uncle)
Friends: Kim Possible (best friend since pre-k), Tara King, Brick Flagg, Josh Mankey, Bonnie Rockwaller (later in the chapters), Wade Load, Rufus.
Ranger Color: Red

Kimberly Anne Possible
Age 17
Family: Dr. Anne Possible (mother), Dr. James Timothy Possible (father) Dr. Thomas Oliver (uncle), Kimberly Hart (aunt) Nana Possible (grandmother), Larry Possible (cousin)
Friends: Ronald Stoppable (best friend since pre-k), Tara King, Josh Mankey, Wade Load, Brick Flagg, Bonnie Rockwaller (later in the chapters), Rufus.
Ranger Color: Pink.

Brick Flagg
Age 18
Family: Zoey Flagg (mother), Alexander Flagg (father) Yoshi Flagg (older brother)
Friends: Josh Mankey (best friend), Ronald Stoppable, Kim Possible, Wade Load, Rufus, Bonnie Rockwaller (later in chapters)
Ranger Color: Black

Tara King
Age 16
Family: Erica King (mother), Daniel King (father) Sandra King (aunt) Anthony King (uncle)
Friends: Kim Possible (best friend), Ronald Stoppable (best friend), Josh Mankey, Brick Flagg, Bonnie Rockwaller (later in chapters)
Ranger Color: Yellow

Josh Mankey
Age: 17
Family: Joshua Mankey Sir (father), Catherine Mankey (mother) Danielle Mankey (younger sister) (oc)
Friends: Ronald Stoppable, Brick Flagg (best friend), Kim Possible, Tara King, Bonnie Rockwaller (later in chapters), Rufus, Wade Load,  Felix Renton.
Ranger Color: Blue

Bonnie Rockwaller
Age 17
Family: Mrs. Rockwaller (mother) Connie Rockwaller (sister), Lonnie Rockwaller (sister)
Friends: Tara King, Hope Joan, The Rangers (later in chapters)
Ranger Color: White.

Wade Load
Age: 12
Family: Mr & Mrs. Load (Parents)
Friends: Ronald Stoppable (best friend), Kim Possible (best friend), Josh Mankey, Brick Flagg, Tara King, Bonnie Rockwaller (later in chapters), Rufus
Ranger Color: Samurai Green