People who get some sort of pleasure from physically/mentally/emotionally harming themselves, or from having other people hurt them.

Dismal the Hedgehog

Oblivion the Hedgehog

Cuoleputure the Pheonolf

Dixie Kwill

Medusa the Witchcat

Venamica the Demon Hedgecat

Onorc the Blackblood

Fate the Echidna