Plague The Six Winged Serpent

He is The Main Threat to Equestria along with King Sombra, Tirek, And Chrysalis, his Enemy is Pinkie Pie Which he possessed her body to kill all the missing ponies that he killed. Which he is the Titular Main Antagonist in his own MLP Fanmade Comic "The Six Winged Serpent"
 * He is The Main Villain of Carrie and Tod's Adventures.