(From left to right - Mami, Homura, Madoka, Sayaka, Kyōko).

Mami Tomoe

Age: Late teens.
Birthday: June 5
Fact/Quirk: Lives alone.
Popular among her classmates but can get lonely.
Titles: Student and Researcher.
Former Magical Girl.
Weapon of choice: Musket.

Homura Akemi

Age: 22 (Appears as a teenager).
Birthday: February 22
Fact/Quirk: Will protect Madoka with her life (or even more if possible).
Titles: Student.
Controller of the Universe.
Weapons of choice: Guns, Bows, Time-stopping powers (Former).

Madoka Kaname

Age: Mid-teens.
Birthday: October 3.
Fact/Quirk: Wants nobody to experience despair and everyone to be happy.
Titles: Student.
Protector of Magical Girls.
Weapon of choice: Bow and arrows.

Sayaka Miki

Age: Mid-teens.
Birthday: September 20
Fact/Quirk: Madoka's childhood friend
Titles: Student.
Former Magical Girl.
Weapon of choice: Sword.

Kyōko Sakura

Age: Mid to late teens.
Birthday: May 9
Facts/Quirks: Lives in Kazamino City, not Mitakihara.
Loves food - justified as she nearly starved to death once.
Titles: Foodie Queen
Former Magical Girl.
Weapon of choice: Spear.

Kyubey

Age: Unknown
Birthday: Unknown
Appearance: Cat-like
Species: Incubators (Alien)
Target: Slowing the death of the Universe.