The Rage Twins
Elvin and Elvira Halliday were inseperable since their births, only two minutes apart. They were also amoral, getting arrested multiple times throughout their teenage years. Then they participated in a drug experiment by The Unicorn. The drug killed the other 35 test subjects, but in Elvin and Elvira it found ideal hosts. The serum greatly increased their physical attributes, and enhanced their natural proclivity to anger.