Long time ago, there was a thread such as this. You take some kind of cartoon/video game/movie/comic/whatever and cast TFF as the characters from that thing. Since I am such a brony, I will do MLP:FIM.

Fluttershy: Dodie16. The cute, shy one. Also, the pretty one.
Rainbow Dash: R Kyra. The cocky and brash one. Kicks the asses. Makes things 20% cooler with her presence.
Pinkie Pie: Gypsie Elder. The hyper, fun one. Good for talking to.
Apple Jack: Freya. Hard worker, honest, and has that charm.
Rarity: Quistis. The beautiful one, she knows how to make things look good too. Lookit her art!
Twilight Sparkles: Dragonheart. The smart lady. Knows her stuffs.
Big Macintosh: Pete. Big, strong guy. Eyup.
Spike: Soldier 819. The little brother. Also, he loves this character!
Princess Celestia: Oceaneyes. The regal queen of Equestria. Is patient, but will banish you to the moon if necessary.
Dischord: che. Loves chaos, tries to cause it wherever he can. Wicked sense of humor.

There. Now yer turn! Anyhoo...

Wuv, Yer Mom