Woobie / Ultra Fast Pony

• Soarin is in a highly abusive relationship with Spitfire, who never wastes an opportunity to insult him or put him down in-front of other ponies, and was told their daughter was dead, when Spitfire abandoned her.
• Their daughter Fleetfoot, who Spitfire abandoned for a decade and only brought back to make Rainbow jealous. Oh, and Spitfire told Soarin she was dead the whole time.
• Fluttershy is a former slave whose treated as an Extreme Doormat by her friends (though she does occasionally give as good as she gets) and the animals she tries desperately to care for.
• Spike was kidnapped from his mother when he was just a baby by his "adopted mother" Twilight Sparkle who treats him like a slave. When he tries to leave, she poisons him and would only give him the antidote if he stays.
• Applebloom is constantly belittled and tormented by Granny Smith for petty reasons, if any, her parents are dead,(which Granny Smith blames on her, for no given reason.) and she has become delusional and developed Twist, an imaginary friend who tries to talk her into being evil.
• Gilda in this series just wanted to be friends with the ponies, but is rebuffed by them being racist jerks.
• And how can we forget poor old Luna? The princess that has always been treated like crap by her own sister and racist subjects, before being vanished to the moon for a thousand years, then relegated to the basement for the rest of the series, where Celestia continues to treat her like crap.
• Also Cheerilee. She apparently survived an off screen lynching, for unspecified reasons and is constantly pushed around, and even black mailed by her own students. And later, drugged by the CMC into a relationship with Big Mac. Though at least they're implied to be Happily Married.