Hayate (Earth-19999)

Ein, real name Hayate is a recurring antagonist of the Mortal Fighter Series. One of the rare characters to debut in the first game of the series, Ein is a puppet of the Shadaloo, the terrorist organization, ruled by M. Bison. His popularity and moves led to his inclusion in almost all subsequent games in the series, such as Mortal Fighter II and III.

Early Life
Hayate is the eldest child and only son of Shiden, the former leader of the Mugen Tenshin Clan, and Ayame. He was born to be the next leader of the clan, to follow on from his father. He seemed to have a happy childhood, training in the art of the clan, Tenjinmon-styled ninjutsu, with his younger sister Kasumi, who loved him dearly. When Shadaloo raided their village and slaughtered all, Hayate was sparred by Bison so he could use him as a puppet to his deeds. Through the years, Ein grew as the perfect member of the organization, killing or defeating all who challenged him, obviously, in the ways his "master" Bison taught him. He would obey every order without question, even if it involves seemingly unmoral acts.